711.11% is the change from 81 to 657
Calculation steps:
[( 657 - 81 ) ÷ 81] x 100 = 711.11%
Formula
Percentage change = [(657 - 81) / 81] x 100
Subtract the new number by the original number
657 - 81 = 576
576 ÷ 81 = 7.111111111111111
7.111111111111111 x 100 = 711.11%