-98.58% is the change from 847 to 12
Calculation steps:
[( 12 - 847 ) ÷ 847] x 100 = -98.58%
Formula
Percentage change = [(12 - 847) / 847] x 100
Subtract the new number by the original number
12 - 847 = -835
-835 ÷ 847 = -0.9858323494687131
-0.9858323494687131 x 100 = -98.58%