67.06% is the change from 255 to 426
Calculation steps:
[( 426 - 255 ) ÷ 255] x 100 = 67.06%
Formula
Percentage change = [(426 - 255) / 255] x 100
Subtract the new number by the original number
426 - 255 = 171
171 ÷ 255 = 0.6705882352941176
0.6705882352941176 x 100 = 67.06%