25400% is the change from 1 to 255
Calculation steps:
[( 255 - 1 ) ÷ 1] x 100 = 25400%
Formula
Percentage change = [(255 - 1) / 1] x 100
Subtract the new number by the original number
255 - 1 = 254
254 ÷ 1 = 254
254 x 100 = 25400%
Example