18.89% is the change from 577 to 686
Calculation steps:
[( 686 - 577 ) ÷ 577] x 100 = 18.89%
Formula
Percentage change = [(686 - 577) / 577] x 100
Subtract the new number by the original number
686 - 577 = 109
109 ÷ 577 = 0.18890814558058924
0.18890814558058924 x 100 = 18.89%