55.49% is the change from 164 to 255
Calculation steps:
[( 255 - 164 ) ÷ 164] x 100 = 55.49%
Formula
Percentage change = [(255 - 164) / 164] x 100
Subtract the new number by the original number
255 - 164 = 91
91 ÷ 164 = 0.5548780487804879
0.5548780487804879 x 100 = 55.49%