2277.5% is the change from 40 to 951
Calculation steps:
[( 951 - 40 ) ÷ 40] x 100 = 2277.5%
Formula
Percentage change = [(951 - 40) / 40] x 100
Subtract the new number by the original number
951 - 40 = 911
911 ÷ 40 = 22.775
22.775 x 100 = 2277.5%
Example