253.73% is the change from 255 to 902
Calculation steps:
[( 902 - 255 ) ÷ 255] x 100 = 253.73%
Formula
Percentage change = [(902 - 255) / 255] x 100
Subtract the new number by the original number
902 - 255 = 647
647 ÷ 255 = 2.537254901960784
2.537254901960784 x 100 = 253.73%