128.93% is the change from 121 to 277
Calculation steps:
[( 277 - 121 ) ÷ 121] x 100 = 128.93%
Formula
Percentage change = [(277 - 121) / 121] x 100
Subtract the new number by the original number
277 - 121 = 156
156 ÷ 121 = 1.2892561983471074
1.2892561983471074 x 100 = 128.93%