1817.5% is the change from 40 to 767
Calculation steps:
[( 767 - 40 ) ÷ 40] x 100 = 1817.5%
Formula
Percentage change = [(767 - 40) / 40] x 100
Subtract the new number by the original number
767 - 40 = 727
727 ÷ 40 = 18.175
18.175 x 100 = 1817.5%
Example