709.88% is the change from 81 to 656
Calculation steps:
[( 656 - 81 ) ÷ 81] x 100 = 709.88%
Formula
Percentage change = [(656 - 81) / 81] x 100
Subtract the new number by the original number
656 - 81 = 575
575 ÷ 81 = 7.098765432098766
7.098765432098766 x 100 = 709.88%