-96.53% is the change from 864 to 30
Calculation steps:
[( 30 - 864 ) ÷ 864] x 100 = -96.53%
Formula
Percentage change = [(30 - 864) / 864] x 100
Subtract the new number by the original number
30 - 864 = -834
-834 ÷ 864 = -0.9652777777777778
-0.9652777777777778 x 100 = -96.53%