45.28% is the change from 159 to 231
Calculation steps:
[( 231 - 159 ) ÷ 159] x 100 = 45.28%
Formula
Percentage change = [(231 - 159) / 159] x 100
Subtract the new number by the original number
231 - 159 = 72
72 ÷ 159 = 0.4528301886792453
0.4528301886792453 x 100 = 45.28%