32.94% is the change from 255 to 339
Calculation steps:
[( 339 - 255 ) ÷ 255] x 100 = 32.94%
Formula
Percentage change = [(339 - 255) / 255] x 100
Subtract the new number by the original number
339 - 255 = 84
84 ÷ 255 = 0.32941176470588235
0.32941176470588235 x 100 = 32.94%