1840.48% is the change from 42 to 815
Calculation steps:
[( 815 - 42 ) ÷ 42] x 100 = 1840.48%
Formula
Percentage change = [(815 - 42) / 42] x 100
Subtract the new number by the original number
815 - 42 = 773
773 ÷ 42 = 18.404761904761905
18.404761904761905 x 100 = 1840.48%