100.79% is the change from 127 to 255
Calculation steps:
[( 255 - 127 ) ÷ 127] x 100 = 100.79%
Formula
Percentage change = [(255 - 127) / 127] x 100
Subtract the new number by the original number
255 - 127 = 128
128 ÷ 127 = 1.0078740157480315
1.0078740157480315 x 100 = 100.79%