-96.52% is the change from 863 to 30
Calculation steps:
[( 30 - 863 ) ÷ 863] x 100 = -96.52%
Formula
Percentage change = [(30 - 863) / 863] x 100
Subtract the new number by the original number
30 - 863 = -833
-833 ÷ 863 = -0.9652375434530707
-0.9652375434530707 x 100 = -96.52%