12.94% is the change from 255 to 288
Calculation steps:
[( 288 - 255 ) ÷ 255] x 100 = 12.94%
Formula
Percentage change = [(288 - 255) / 255] x 100
Subtract the new number by the original number
288 - 255 = 33
33 ÷ 255 = 0.12941176470588237
0.12941176470588237 x 100 = 12.94%