7.55% is the change from 159 to 171
Calculation steps:
[( 171 - 159 ) ÷ 159] x 100 = 7.55%
Formula
Percentage change = [(171 - 159) / 159] x 100
Subtract the new number by the original number
171 - 159 = 12
12 ÷ 159 = 0.07547169811320754
0.07547169811320754 x 100 = 7.55%