2062.5% is the change from 40 to 865
Calculation steps:
[( 865 - 40 ) ÷ 40] x 100 = 2062.5%
Formula
Percentage change = [(865 - 40) / 40] x 100
Subtract the new number by the original number
865 - 40 = 825
825 ÷ 40 = 20.625
20.625 x 100 = 2062.5%
Example