8112.5% is the change from 8 to 657
Calculation steps:
[( 657 - 8 ) ÷ 8] x 100 = 8112.5%
Formula
Percentage change = [(657 - 8) / 8] x 100
Subtract the new number by the original number
657 - 8 = 649
649 ÷ 8 = 81.125
81.125 x 100 = 8112.5%
Example