9.94% is the change from 171 to 188
Calculation steps:
[( 188 - 171 ) ÷ 171] x 100 = 9.94%
Formula
Percentage change = [(188 - 171) / 171] x 100
Subtract the new number by the original number
188 - 171 = 17
17 ÷ 171 = 0.09941520467836257
0.09941520467836257 x 100 = 9.94%