686.24% is the change from 109 to 857
Calculation steps:
[( 857 - 109 ) ÷ 109] x 100 = 686.24%
Formula
Percentage change = [(857 - 109) / 109] x 100
Subtract the new number by the original number
857 - 109 = 748
748 ÷ 109 = 6.862385321100917
6.862385321100917 x 100 = 686.24%