9.55% is the change from 157 to 172
Calculation steps:
[( 172 - 157 ) ÷ 157] x 100 = 9.55%
Formula
Percentage change = [(172 - 157) / 157] x 100
Subtract the new number by the original number
172 - 157 = 15
15 ÷ 157 = 0.09554140127388536
0.09554140127388536 x 100 = 9.55%