39.71% is the change from 491 to 686
Calculation steps:
[( 686 - 491 ) ÷ 491] x 100 = 39.71%
Formula
Percentage change = [(686 - 491) / 491] x 100
Subtract the new number by the original number
686 - 491 = 195
195 ÷ 491 = 0.3971486761710794
0.3971486761710794 x 100 = 39.71%