2375% is the change from 40 to 990
Calculation steps:
[( 990 - 40 ) ÷ 40] x 100 = 2375%
Formula
Percentage change = [(990 - 40) / 40] x 100
Subtract the new number by the original number
990 - 40 = 950
950 ÷ 40 = 23.75
23.75 x 100 = 2375%
Example