502.75% is the change from 109 to 657
Calculation steps:
[( 657 - 109 ) ÷ 109] x 100 = 502.75%
Formula
Percentage change = [(657 - 109) / 109] x 100
Subtract the new number by the original number
657 - 109 = 548
548 ÷ 109 = 5.027522935779817
5.027522935779817 x 100 = 502.75%