38.67% is the change from 181 to 251
Calculation steps:
[( 251 - 181 ) ÷ 181] x 100 = 38.67%
Formula
Percentage change = [(251 - 181) / 181] x 100
Subtract the new number by the original number
251 - 181 = 70
70 ÷ 181 = 0.3867403314917127
0.3867403314917127 x 100 = 38.67%