-88.41% is the change from 863 to 100
Calculation steps:
[( 100 - 863 ) ÷ 863] x 100 = -88.41%
Formula
Percentage change = [(100 - 863) / 863] x 100
Subtract the new number by the original number
100 - 863 = -763
-763 ÷ 863 = -0.884125144843569
-0.884125144843569 x 100 = -88.41%