74.9% is the change from 255 to 446
Calculation steps:
[( 446 - 255 ) ÷ 255] x 100 = 74.9%
Formula
Percentage change = [(446 - 255) / 255] x 100
Subtract the new number by the original number
446 - 255 = 191
191 ÷ 255 = 0.7490196078431373
0.7490196078431373 x 100 = 74.9%