66.91% is the change from 136 to 227
Calculation steps:
[( 227 - 136 ) ÷ 136] x 100 = 66.91%
Formula
Percentage change = [(227 - 136) / 136] x 100
Subtract the new number by the original number
227 - 136 = 91
91 ÷ 136 = 0.6691176470588235
0.6691176470588235 x 100 = 66.91%