42.22% is the change from 180 to 256
Calculation steps:
[( 256 - 180 ) ÷ 180] x 100 = 42.22%
Formula
Percentage change = [(256 - 180) / 180] x 100
Subtract the new number by the original number
256 - 180 = 76
76 ÷ 180 = 0.4222222222222222
0.4222222222222222 x 100 = 42.22%