61.39% is the change from 531 to 857
Calculation steps:
[( 857 - 531 ) ÷ 531] x 100 = 61.39%
Formula
Percentage change = [(857 - 531) / 531] x 100
Subtract the new number by the original number
857 - 531 = 326
326 ÷ 531 = 0.6139359698681732
0.6139359698681732 x 100 = 61.39%