1815% is the change from 40 to 766
Calculation steps:
[( 766 - 40 ) ÷ 40] x 100 = 1815%
Formula
Percentage change = [(766 - 40) / 40] x 100
Subtract the new number by the original number
766 - 40 = 726
726 ÷ 40 = 18.15
18.15 x 100 = 1815%
Example