70.33% is the change from 91 to 155
Calculation steps:
[( 155 - 91 ) ÷ 91] x 100 = 70.33%
Formula
Percentage change = [(155 - 91) / 91] x 100
Subtract the new number by the original number
155 - 91 = 64
64 ÷ 91 = 0.7032967032967034
0.7032967032967034 x 100 = 70.33%