-91.54% is the change from 863 to 73
Calculation steps:
[( 73 - 863 ) ÷ 863] x 100 = -91.54%
Formula
Percentage change = [(73 - 863) / 863] x 100
Subtract the new number by the original number
73 - 863 = -790
-790 ÷ 863 = -0.9154113557358053
-0.9154113557358053 x 100 = -91.54%