27.62% is the change from 181 to 231
Calculation steps:
[( 231 - 181 ) ÷ 181] x 100 = 27.62%
Formula
Percentage change = [(231 - 181) / 181] x 100
Subtract the new number by the original number
231 - 181 = 50
50 ÷ 181 = 0.27624309392265195
0.27624309392265195 x 100 = 27.62%