1870% is the change from 40 to 788
Calculation steps:
[( 788 - 40 ) ÷ 40] x 100 = 1870%
Formula
Percentage change = [(788 - 40) / 40] x 100
Subtract the new number by the original number
788 - 40 = 748
748 ÷ 40 = 18.7
18.7 x 100 = 1870%
Example