2272.5% is the change from 40 to 949
Calculation steps:
[( 949 - 40 ) ÷ 40] x 100 = 2272.5%
Formula
Percentage change = [(949 - 40) / 40] x 100
Subtract the new number by the original number
949 - 40 = 909
909 ÷ 40 = 22.725
22.725 x 100 = 2272.5%
Example