39.51% is the change from 81 to 113
Calculation steps:
[( 113 - 81 ) ÷ 81] x 100 = 39.51%
Formula
Percentage change = [(113 - 81) / 81] x 100
Subtract the new number by the original number
113 - 81 = 32
32 ÷ 81 = 0.3950617283950617
0.3950617283950617 x 100 = 39.51%