8.18% is the change from 159 to 172
Calculation steps:
[( 172 - 159 ) ÷ 159] x 100 = 8.18%
Formula
Percentage change = [(172 - 159) / 159] x 100
Subtract the new number by the original number
172 - 159 = 13
13 ÷ 159 = 0.08176100628930817
0.08176100628930817 x 100 = 8.18%