214.51% is the change from 255 to 802
Calculation steps:
[( 802 - 255 ) ÷ 255] x 100 = 214.51%
Formula
Percentage change = [(802 - 255) / 255] x 100
Subtract the new number by the original number
802 - 255 = 547
547 ÷ 255 = 2.145098039215686
2.145098039215686 x 100 = 214.51%