1940.48% is the change from 42 to 857
Calculation steps:
[( 857 - 42 ) ÷ 42] x 100 = 1940.48%
Formula
Percentage change = [(857 - 42) / 42] x 100
Subtract the new number by the original number
857 - 42 = 815
815 ÷ 42 = 19.404761904761905
19.404761904761905 x 100 = 1940.48%