24.71% is the change from 255 to 318
Calculation steps:
[( 318 - 255 ) ÷ 255] x 100 = 24.71%
Formula
Percentage change = [(318 - 255) / 255] x 100
Subtract the new number by the original number
318 - 255 = 63
63 ÷ 255 = 0.24705882352941178
0.24705882352941178 x 100 = 24.71%