1600% is the change from 25 to 425
Calculation steps:
[( 425 - 25 ) ÷ 25] x 100 = 1600%
Formula
Percentage change = [(425 - 25) / 25] x 100
Subtract the new number by the original number
425 - 25 = 400
400 ÷ 25 = 16
16 x 100 = 1600%
Example