1852.5% is the change from 40 to 781
Calculation steps:
[( 781 - 40 ) ÷ 40] x 100 = 1852.5%
Formula
Percentage change = [(781 - 40) / 40] x 100
Subtract the new number by the original number
781 - 40 = 741
741 ÷ 40 = 18.525
18.525 x 100 = 1852.5%
Example