25.1% is the change from 255 to 319
Calculation steps:
[( 319 - 255 ) ÷ 255] x 100 = 25.1%
Formula
Percentage change = [(319 - 255) / 255] x 100
Subtract the new number by the original number
319 - 255 = 64
64 ÷ 255 = 0.25098039215686274
0.25098039215686274 x 100 = 25.1%