32.79% is the change from 61 to 81
Calculation steps:
[( 81 - 61 ) ÷ 61] x 100 = 32.79%
Formula
Percentage change = [(81 - 61) / 61] x 100
Subtract the new number by the original number
81 - 61 = 20
20 ÷ 61 = 0.32786885245901637
0.32786885245901637 x 100 = 32.79%