129.87% is the change from 231 to 531
Calculation steps:
[( 531 - 231 ) ÷ 231] x 100 = 129.87%
Formula
Percentage change = [(531 - 231) / 231] x 100
Subtract the new number by the original number
531 - 231 = 300
300 ÷ 231 = 1.2987012987012987
1.2987012987012987 x 100 = 129.87%