718.52% is the change from 81 to 663
Calculation steps:
[( 663 - 81 ) ÷ 81] x 100 = 718.52%
Formula
Percentage change = [(663 - 81) / 81] x 100
Subtract the new number by the original number
663 - 81 = 582
582 ÷ 81 = 7.185185185185185
7.185185185185185 x 100 = 718.52%