720% is the change from 80 to 656
Calculation steps:
[( 656 - 80 ) ÷ 80] x 100 = 720%
Formula
Percentage change = [(656 - 80) / 80] x 100
Subtract the new number by the original number
656 - 80 = 576
576 ÷ 80 = 7.2
7.2 x 100 = 720%
Example