-98.73% is the change from 863 to 11
Calculation steps:
[( 11 - 863 ) ÷ 863] x 100 = -98.73%
Formula
Percentage change = [(11 - 863) / 863] x 100
Subtract the new number by the original number
11 - 863 = -852
-852 ÷ 863 = -0.9872537659327926
-0.9872537659327926 x 100 = -98.73%