Page 205 - Math Course 1 (Book 1)

Percent of Increase and Decrease

= –0.20 or –20% Write the decimal as a MO. 6 - L7b
percent
The percent of change is –20%. Finding the Percent of
Answer In this case, the percent of
change is a percent of decrease. Increase
Vocabulary A-Z

Let us learn some vocabulary
Your Turn!

Find Percent of Change
Find the percent of change from 84 to 105. Percent of Increase

A. 20% When an amount increases, the percent of change is
B. 25% the percent of increase.
C. 75%
D. 80%
Percent of Change = amount of change
Answer original amount

1.02
Substitution =
0.57

Write the decimal as = 1.79 or 179%
a percent

The percent of change
is about 179%. In this
case, the percent of
Find Percent of Decrease change is a percent of
SHOES increase.
A $145 pair of tennis shoes is on sale for $105.
What is the percent of change?

A. 27.6%
B. –27.6%
C. –38.1%
D. –72.4% Let’s Begin

Answer
Find Percent of Increase

Example

TUITION
In 1965, when John entered college, the tuition per
year was $7500. In 2005, when his daughter went
to the same school, the tuition was $25,500. Find
the percent of change.

197