29.19% is the change from 531 to 686
Calculation steps:
[( 686 - 531 ) ÷ 531] x 100 = 29.19%
Formula
Percentage change = [(686 - 531) / 531] x 100
Subtract the new number by the original number
686 - 531 = 155
155 ÷ 531 = 0.2919020715630885
0.2919020715630885 x 100 = 29.19%