113.33% is the change from 120 to 256
Calculation steps:
[( 256 - 120 ) ÷ 120] x 100 = 113.33%
Formula
Percentage change = [(256 - 120) / 120] x 100
Subtract the new number by the original number
256 - 120 = 136
136 ÷ 120 = 1.1333333333333333
1.1333333333333333 x 100 = 113.33%