1.17% is the change from 171 to 173
Calculation steps:
[( 173 - 171 ) ÷ 171] x 100 = 1.17%
Formula
Percentage change = [(173 - 171) / 171] x 100
Subtract the new number by the original number
173 - 171 = 2
2 ÷ 171 = 0.011695906432748537
0.011695906432748537 x 100 = 1.17%