79.12% is the change from 91 to 163
Calculation steps:
[( 163 - 91 ) ÷ 91] x 100 = 79.12%
Formula
Percentage change = [(163 - 91) / 91] x 100
Subtract the new number by the original number
163 - 91 = 72
72 ÷ 91 = 0.7912087912087912
0.7912087912087912 x 100 = 79.12%