Percent Proportion and Percent of Change

The number of people signed up for a bus trip increased from 32 to 45. What is the percent increase? Round to the nearest percent.

• 52%

• 41%

• 42%

• 45%

The Game Stop is having a sale on an originally $66.64 game. It is on sale for $29.99. What is the percent change?

• 54.9% Decrease

• 54.9% Increase

• 549% Decrease

• 549% Increase

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter? 

• 35%

• 25%

• 30%

• 20%

Mrs. Ciampa had 27 students in her class last year and this year she had 30 students in her math class. What is the percent of change?

• 24%

• 20%

• 11%

• 50%

Percent Proportion

• proportions used to solve problems about percentages

• two fractions set equal to each other

• bar graph

• perimeter of a circle

Calculate the percent change from 50 to 75.

• 25%

• 50%

• 75%

• 100%

Use Notes #10.

Drag and drop the correct percent of change to each box.

a

b

c

25% increase

33% increase

23% decrease

20% decrease

When writing a percent of change proportion, you are comparing parts to wholes.

• True

• False

Which is the correct percent proportion?

• whole/part = %/100

• part/whole = %/100

• part/whole = 100/%

• whole/% = part/100

Match the correct proportion and value for change for the following situations.

b

d

e

g

h

i

decrease $7

increase $7

decrease $5

increase $5