13.25% is the change from 151 to 171
Calculation steps:
[( 171 - 151 ) ÷ 151] x 100 = 13.25%
Formula
Percentage change = [(171 - 151) / 151] x 100
Subtract the new number by the original number
171 - 151 = 20
20 ÷ 151 = 0.13245033112582782
0.13245033112582782 x 100 = 13.25%