2395% is the change from 40 to 998
Calculation steps:
[( 998 - 40 ) ÷ 40] x 100 = 2395%
Formula
Percentage change = [(998 - 40) / 40] x 100
Subtract the new number by the original number
998 - 40 = 958
958 ÷ 40 = 23.95
23.95 x 100 = 2395%
Example