16.03% is the change from 156 to 181
Calculation steps:
[( 181 - 156 ) ÷ 156] x 100 = 16.03%
Formula
Percentage change = [(181 - 156) / 156] x 100
Subtract the new number by the original number
181 - 156 = 25
25 ÷ 156 = 0.16025641025641027
0.16025641025641027 x 100 = 16.03%