-98.61% is the change from 864 to 12
Calculation steps:
[( 12 - 864 ) ÷ 864] x 100 = -98.61%
Formula
Percentage change = [(12 - 864) / 864] x 100
Subtract the new number by the original number
12 - 864 = -852
-852 ÷ 864 = -0.9861111111111112
-0.9861111111111112 x 100 = -98.61%