28.81% is the change from 531 to 684
Calculation steps:
[( 684 - 531 ) ÷ 531] x 100 = 28.81%
Formula
Percentage change = [(684 - 531) / 531] x 100
Subtract the new number by the original number
684 - 531 = 153
153 ÷ 531 = 0.288135593220339
0.288135593220339 x 100 = 28.81%