900% is the change from 25 to 250
Calculation steps:
[( 250 - 25 ) ÷ 25] x 100 = 900%
Formula
Percentage change = [(250 - 25) / 25] x 100
Subtract the new number by the original number
250 - 25 = 225
225 ÷ 25 = 9
9 x 100 = 900%
Example