23.39% is the change from 171 to 211
Calculation steps:
[( 211 - 171 ) ÷ 171] x 100 = 23.39%
Formula
Percentage change = [(211 - 171) / 171] x 100
Subtract the new number by the original number
211 - 171 = 40
40 ÷ 171 = 0.23391812865497075
0.23391812865497075 x 100 = 23.39%