17.39% is the change from 69 to 81
Calculation steps:
[( 81 - 69 ) ÷ 69] x 100 = 17.39%
Formula
Percentage change = [(81 - 69) / 69] x 100
Subtract the new number by the original number
81 - 69 = 12
12 ÷ 69 = 0.17391304347826086
0.17391304347826086 x 100 = 17.39%