8.28% is the change from 157 to 170
Calculation steps:
[( 170 - 157 ) ÷ 157] x 100 = 8.28%
Formula
Percentage change = [(170 - 157) / 157] x 100
Subtract the new number by the original number
170 - 157 = 13
13 ÷ 157 = 0.08280254777070063
0.08280254777070063 x 100 = 8.28%