16.77% is the change from 155 to 181
Calculation steps:
[( 181 - 155 ) ÷ 155] x 100 = 16.77%
Formula
Percentage change = [(181 - 155) / 155] x 100
Subtract the new number by the original number
181 - 155 = 26
26 ÷ 155 = 0.16774193548387098
0.16774193548387098 x 100 = 16.77%