125% is the change from 360 to 810
Calculation steps:
[( 810 - 360 ) ÷ 360] x 100 = 125%
Formula
Percentage change = [(810 - 360) / 360] x 100
Subtract the new number by the original number
810 - 360 = 450
450 ÷ 360 = 1.25
1.25 x 100 = 125%
Example