2500% is the change from 16 to 416
Calculation steps:
[( 416 - 16 ) ÷ 16] x 100 = 2500%
Formula
Percentage change = [(416 - 16) / 16] x 100
Subtract the new number by the original number
416 - 16 = 400
400 ÷ 16 = 25
25 x 100 = 2500%
Example