260% is the change from 225 to 810
Calculation steps:
[( 810 - 225 ) ÷ 225] x 100 = 260%
Formula
Percentage change = [(810 - 225) / 225] x 100
Subtract the new number by the original number
810 - 225 = 585
585 ÷ 225 = 2.6
2.6 x 100 = 260%
Example