111.57% is the change from 121 to 256
Calculation steps:
[( 256 - 121 ) ÷ 121] x 100 = 111.57%
Formula
Percentage change = [(256 - 121) / 121] x 100
Subtract the new number by the original number
256 - 121 = 135
135 ÷ 121 = 1.115702479338843
1.115702479338843 x 100 = 111.57%