The document contains 3 examples of calculating percent change. The first example shows a 50 text increase from December to January, which is an 11.1% increase. The second example shows a 30 pound weight loss from 200 to 170 pounds, which is a 15% decrease. The third example shows a pay raise from $7.25 to $8 per hour, which is a 10.3% increase.

1. Percent of
Change

2. You have unlimited texting on your
cell phone plan. In December you
sent 450 texts and in January you
sent 500 texts. What is the percent
of change from December to
January? Is a percent increase or
a percent decrease?
50 x x = 11.1%
=
450 100 increase

3. Your friend has been working out
and lost weight. His weight
before he began the diet was 200
lbs but now he weighs 170 lbs.
What is his percent decrease of
body weight?
30 x
= x = 15%
200 100

4. Joe works at the grocery store
and makes $7.25 an hour. He
gets a raise and now makes $8.00
an hour. What is his percent
increase in pay?
.75 x
= x = 10.3%
7.25 100