67.84% is the change from 255 to 428
Calculation steps:
[( 428 - 255 ) ÷ 255] x 100 = 67.84%
Formula
Percentage change = [(428 - 255) / 255] x 100
Subtract the new number by the original number
428 - 255 = 173
173 ÷ 255 = 0.6784313725490196
0.6784313725490196 x 100 = 67.84%