1.57% is the change from 255 to 259
Calculation steps:
[( 259 - 255 ) ÷ 255] x 100 = 1.57%
Formula
Percentage change = [(259 - 255) / 255] x 100
Subtract the new number by the original number
259 - 255 = 4
4 ÷ 255 = 0.01568627450980392
0.01568627450980392 x 100 = 1.57%