290.2% is the change from 255 to 995
Calculation steps:
[( 995 - 255 ) ÷ 255] x 100 = 290.2%
Formula
Percentage change = [(995 - 255) / 255] x 100
Subtract the new number by the original number
995 - 255 = 740
740 ÷ 255 = 2.9019607843137254
2.9019607843137254 x 100 = 290.2%