83.33% is the change from 126 to 231
Calculation steps:
[( 231 - 126 ) ÷ 126] x 100 = 83.33%
Formula
Percentage change = [(231 - 126) / 126] x 100
Subtract the new number by the original number
231 - 126 = 105
105 ÷ 126 = 0.8333333333333334
0.8333333333333334 x 100 = 83.33%