2287.5% is the change from 40 to 955
Calculation steps:
[( 955 - 40 ) ÷ 40] x 100 = 2287.5%
Formula
Percentage change = [(955 - 40) / 40] x 100
Subtract the new number by the original number
955 - 40 = 915
915 ÷ 40 = 22.875
22.875 x 100 = 2287.5%
Example