238.43% is the change from 255 to 863
Calculation steps:
[( 863 - 255 ) ÷ 255] x 100 = 238.43%
Formula
Percentage change = [(863 - 255) / 255] x 100
Subtract the new number by the original number
863 - 255 = 608
608 ÷ 255 = 2.384313725490196
2.384313725490196 x 100 = 238.43%