96.47% is the change from 255 to 501
Calculation steps:
[( 501 - 255 ) ÷ 255] x 100 = 96.47%
Formula
Percentage change = [(501 - 255) / 255] x 100
Subtract the new number by the original number
501 - 255 = 246
246 ÷ 255 = 0.9647058823529412
0.9647058823529412 x 100 = 96.47%