3B Percent of Change
Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent
of change is an increase or a decrease.
30 inches to 24 inches
Find the amount of change.
24 30 = 6
Find the percent of change.
The percent of change is 20%. Since the percent is negative, this is a percent of decrease.
20%, decrease
20.5 meters to 35.5 meters
Find the amount of change.
35.5 20.5 = 15
Find the percent of change.
The percent of change is about 73%. Since the percent is positive, this is a percent of increase.
73% increase
$126 to $150
Find the amount of change.
$150 $126 = $24
Find the percent of change.
The percent of change is about 19%. Since the percent is positive, this is a percent of increase.
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19%, increase
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The percent of change is about 73%. Since the percent is positive, this is a percent of increase.
3B Percent of Change
73% increase
$126 to $150
Find the amount of change.
$150 $126 = $24
Find the percent of change.
The percent of change is about 19%. Since the percent is positive, this is a percent of increase.
19%, increase
$75.80 to $94.75
Find the amount of change.
$94.75 $75.80 = $18.95
Find the percent of change.
The percent of change is 25%. Since the percent is positive, this is a percent of increase.
25%, increase
SOCCER The table shows the number of youth 7 years and older who played soccer from 2000 to 2007.
a. Find the percent of change from 2004 to 2007. Round to the nearest tenth of a percent. Is it a change of increase
or decrease?
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b. Find
the- Powered
percentby
ofCognero
change from 2002 to 2004. Round to the nearest tenth of a percent. Is it a change of increase
or decrease?
The percent of change is 25%. Since the percent is positive, this is a percent of increase.
3B Percent of Change
25%, increase
SOCCER The table shows the number of youth 7 years and older who played soccer from 2000 to 2007.
a. Find the percent of change from 2004 to 2007. Round to the nearest tenth of a percent. Is it a change of increase
or decrease?
b. Find the percent of change from 2002 to 2004. Round to the nearest tenth of a percent. Is it a change of increase
or decrease?
a. Find the amount of change.
13.8 13.3 = 0.5
Find the percent of change.
The percent of change is about 3.8%, or about 4%. Since the percent is positive, this is a percent of increase.
b. Find the amount of change.
13.3 13.7 = 0.4
Find the percent of change.
The percent of change is about 2.9%. Since the percent is negative, this is a percent of decrease.
a. about 4%, increase
b. about 2.9%, decrease
Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent
of change is an increase or a decrease.
15 yards to 18 yards
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Find the amount of change.
18 15 = 3
Find the percent of change.
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The percent of change is about 2.9%. Since the percent is negative, this is a percent of decrease.
a. about 4%,
3B Percent
ofincrease
Change
b. about 2.9%, decrease
Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent
of change is an increase or a decrease.
15 yards to 18 yards
Find the amount of change.
18 15 = 3
Find the percent of change.
The percent of change is 20%. Since the percent is positive, this is a percent of increase.
20%, increase
100 acres to 140 acres
Find the amount of change.
140 100 = 40
Find the percent of change.
The percent of change is 40%. Since the percent is positive, this is a percent of increase.
40%, increase
$12 to $6
Find the amount of change.
6 12 = 6
Find the percent of change.
The percent of change is 50%. Since the percent is negative, this is a percent of decrease.
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50%, decrease
Page 4
The percent of change is 40%. Since the percent is positive, this is a percent of increase.
3B Percent of Change
40%, increase
$12 to $6
Find the amount of change.
6 12 = 6
Find the percent of change.
The percent of change is 50%. Since the percent is negative, this is a percent of decrease.
50%, decrease
48 notebooks to 14 notebooks
Find the amount of change.
14 48 = 34
Find the percent of change.
The percent of change is about 71%. Since the percent is negative, this is a percent of decrease.
71%, decrease
125 centimeters to 87.5 centimeters
Find the amount of change.
87.5 125 = 37.5
Find the percent of change.
The percent of change is 30%. Since the percent is negative, this is a percent of decrease.
30%, decrease
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$15.60 to $11.70
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The percent of change is about 71%. Since the percent is negative, this is a percent of decrease.
3B Percent of Change
71%, decrease
125 centimeters to 87.5 centimeters
Find the amount of change.
87.5 125 = 37.5
Find the percent of change.
The percent of change is 30%. Since the percent is negative, this is a percent of decrease.
30%, decrease
$15.60 to $11.70
Find the amount of change.
$11.70 $15.60 = $3.90
Find the percent of change.
The percent of change is 25%. Since the percent is negative, this is a percent of decrease.
25%, decrease
1.6 hours to 0.95 hour
Find the amount of change.
0.95 1.6 = 0.65
Find the percent of change.
The percent of change is about 41%. Since the percent is negative, this is a percent of decrease.
41%,
decrease
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132 days to 125.4 days
Page 6
The percent of change is 25%. Since the percent is negative, this is a percent of decrease.
3B Percent of Change
25%, decrease
1.6 hours to 0.95 hour
Find the amount of change.
0.95 1.6 = 0.65
Find the percent of change.
The percent of change is about 41%. Since the percent is negative, this is a percent of decrease.
41%, decrease
132 days to 125.4 days
Find the amount of change.
125.4 132 = 6.6
Find the percent of change.
The percent of change is 5%. Since the percent is negative, this is a percent of decrease.
5%, decrease
$240 to $320
Find the amount of change.
320 240 = 80
Find the percent of change.
The percent of change is about 33%. Since the percent is positive, this is a percent of increase.
33%,
increase
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624 feet to 702 feet
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The percent of change is 5%. Since the percent is negative, this is a percent of decrease.
3B Percent of Change
5%, decrease
$240 to $320
Find the amount of change.
320 240 = 80
Find the percent of change.
The percent of change is about 33%. Since the percent is positive, this is a percent of increase.
33%, increase
624 feet to 702 feet
Find the amount of change.
702 624 = 78
Find the percent of change.
The percent of change is about 13%. Since the percent is positive, this is a percent of increase.
13%, increase
Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent
of change is an increase or a decrease.
BOOKS On Monday, Kenya spent 60 minutes reading her favorite book. Today, she spent 45 minutes reading this
book.
Find the amount of change.
45 60 = 15
Find the percent of change.
TheManual
percent
of change
is 25%.
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by Cognero
25%, decrease
Since the percent is negative, this is a percent of decrease.
Page 8
The percent of change is about 13%. Since the percent is positive, this is a percent of increase.
3B Percent of Change
13%, increase
Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent
of change is an increase or a decrease.
BOOKS On Monday, Kenya spent 60 minutes reading her favorite book. Today, she spent 45 minutes reading this
book.
Find the amount of change.
45 60 = 15
Find the percent of change.
The percent of change is 25%. Since the percent is negative, this is a percent of decrease.
25%, decrease
EXERCISE Three months ago, Santos could walk 2 miles in 40 minutes. Today he can walk 2 miles in 25 minutes.
Find the amount of change.
25 40 = 15
Find the percent of change.
The percent of change is about 38%. Since the percent is negative, this is a percent of decrease.
38%, decrease
SCHOOL Last school year the enrollment of Genoa Middle School was 465 students. This year the enrollment is
525.
Find the amount of change.
525 465 = 60
Find the percent of change.
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The percent of change is about 13%. Since the percent is positive, this is a percent of increase.
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The percent of change is about 38%. Since the percent is negative, this is a percent of decrease.
3B Percent of Change
38%, decrease
SCHOOL Last school year the enrollment of Genoa Middle School was 465 students. This year the enrollment is
525.
Find the amount of change.
525 465 = 60
Find the percent of change.
The percent of change is about 13%. Since the percent is positive, this is a percent of increase.
13%, increase
MONEY Jake had $782 in his checking account. He now has $798.
Find the amount of change.
$798 $782 = $16
Find the percent of change.
The percent of change is about 2%. Since the percent is positive, this is a percent of increase.
2%, increase
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