-99.65% is the change from 863 to 3
Calculation steps:
[( 3 - 863 ) ÷ 863] x 100 = -99.65%
Formula
Percentage change = [(3 - 863) / 863] x 100
Subtract the new number by the original number
3 - 863 = -860
-860 ÷ 863 = -0.996523754345307
-0.996523754345307 x 100 = -99.65%