96.09% is the change from 256 to 502
Calculation steps:
[( 502 - 256 ) ÷ 256] x 100 = 96.09%
Formula
Percentage change = [(502 - 256) / 256] x 100
Subtract the new number by the original number
502 - 256 = 246
246 ÷ 256 = 0.9609375
0.9609375 x 100 = 96.09%