117.65% is the change from 255 to 555
Calculation steps:
[( 555 - 255 ) ÷ 255] x 100 = 117.65%
Formula
Percentage change = [(555 - 255) / 255] x 100
Subtract the new number by the original number
555 - 255 = 300
300 ÷ 255 = 1.1764705882352942
1.1764705882352942 x 100 = 117.65%