209.02% is the change from 255 to 788
Calculation steps:
[( 788 - 255 ) ÷ 255] x 100 = 209.02%
Formula
Percentage change = [(788 - 255) / 255] x 100
Subtract the new number by the original number
788 - 255 = 533
533 ÷ 255 = 2.0901960784313727
2.0901960784313727 x 100 = 209.02%