1973.81% is the change from 42 to 871
Calculation steps:
[( 871 - 42 ) ÷ 42] x 100 = 1973.81%
Formula
Percentage change = [(871 - 42) / 42] x 100
Subtract the new number by the original number
871 - 42 = 829
829 ÷ 42 = 19.738095238095237
19.738095238095237 x 100 = 1973.81%