245.1% is the change from 255 to 880
Calculation steps:
[( 880 - 255 ) ÷ 255] x 100 = 245.1%
Formula
Percentage change = [(880 - 255) / 255] x 100
Subtract the new number by the original number
880 - 255 = 625
625 ÷ 255 = 2.450980392156863
2.450980392156863 x 100 = 245.1%