72.22% is the change from 180 to 310
Calculation steps:
[( 310 - 180 ) ÷ 180] x 100 = 72.22%
Formula
Percentage change = [(310 - 180) / 180] x 100
Subtract the new number by the original number
310 - 180 = 130
130 ÷ 180 = 0.7222222222222222
0.7222222222222222 x 100 = 72.22%