-51.33% is the change from 863 to 420
Calculation steps:
[( 420 - 863 ) ÷ 863] x 100 = -51.33%
Formula
Percentage change = [(420 - 863) / 863] x 100
Subtract the new number by the original number
420 - 863 = -443
-443 ÷ 863 = -0.5133256083429896
-0.5133256083429896 x 100 = -51.33%