-97.91% is the change from 863 to 18
Calculation steps:
[( 18 - 863 ) ÷ 863] x 100 = -97.91%
Formula
Percentage change = [(18 - 863) / 863] x 100
Subtract the new number by the original number
18 - 863 = -845
-845 ÷ 863 = -0.9791425260718424
-0.9791425260718424 x 100 = -97.91%