1140% is the change from 40 to 496
Calculation steps:
[( 496 - 40 ) ÷ 40] x 100 = 1140%
Formula
Percentage change = [(496 - 40) / 40] x 100
Subtract the new number by the original number
496 - 40 = 456
456 ÷ 40 = 11.4
11.4 x 100 = 1140%
Example