Subtract to find the amount of change

New amount original amount

27 10

= 17                 (Subtract: 27 10 = 17)

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.