39.44% is the change from 180 to 251
Calculation steps:
[( 251 - 180 ) ÷ 180] x 100 = 39.44%
Formula
Percentage change = [(251 - 180) / 180] x 100
Subtract the new number by the original number
251 - 180 = 71
71 ÷ 180 = 0.39444444444444443
0.39444444444444443 x 100 = 39.44%