93.33% is the change from 255 to 493
Calculation steps:
[( 493 - 255 ) ÷ 255] x 100 = 93.33%
Formula
Percentage change = [(493 - 255) / 255] x 100
Subtract the new number by the original number
493 - 255 = 238
238 ÷ 255 = 0.9333333333333333
0.9333333333333333 x 100 = 93.33%