Subtract to find the amount of change.

New measurement original measurement

36 25

= 9                (Subtract: 36 25 = 9)

Write a ratio that compares the amount of change to the original amount.Express the ratio as a percent.

Percent change = .

        (Divide: )

Write decimal as percent.

Multiply by 100 and add .

        (Multiply: )

The percent of change is about .In this case, the percent of change is a percent of increase.