92.59% is the change from 81 to 156
Calculation steps:
[( 156 - 81 ) ÷ 81] x 100 = 92.59%
Formula
Percentage change = [(156 - 81) / 81] x 100
Subtract the new number by the original number
156 - 81 = 75
75 ÷ 81 = 0.9259259259259259
0.9259259259259259 x 100 = 92.59%