30.13% is the change from 531 to 691
Calculation steps:
[( 691 - 531 ) ÷ 531] x 100 = 30.13%
Formula
Percentage change = [(691 - 531) / 531] x 100
Subtract the new number by the original number
691 - 531 = 160
160 ÷ 531 = 0.3013182674199623
0.3013182674199623 x 100 = 30.13%