74.51% is the change from 255 to 445
Calculation steps:
[( 445 - 255 ) ÷ 255] x 100 = 74.51%
Formula
Percentage change = [(445 - 255) / 255] x 100
Subtract the new number by the original number
445 - 255 = 190
190 ÷ 255 = 0.7450980392156863
0.7450980392156863 x 100 = 74.51%