2.34% is the change from 171 to 175
Calculation steps:
[( 175 - 171 ) ÷ 171] x 100 = 2.34%
Formula
Percentage change = [(175 - 171) / 171] x 100
Subtract the new number by the original number
175 - 171 = 4
4 ÷ 171 = 0.023391812865497075
0.023391812865497075 x 100 = 2.34%