4000% is the change from 16 to 656
Calculation steps:
[( 656 - 16 ) ÷ 16] x 100 = 4000%
Formula
Percentage change = [(656 - 16) / 16] x 100
Subtract the new number by the original number
656 - 16 = 640
640 ÷ 16 = 40
40 x 100 = 4000%
Example