-79.95% is the change from 863 to 173
Calculation steps:
[( 173 - 863 ) ÷ 863] x 100 = -79.95%
Formula
Percentage change = [(173 - 863) / 863] x 100
Subtract the new number by the original number
173 - 863 = -690
-690 ÷ 863 = -0.7995365005793743
-0.7995365005793743 x 100 = -79.95%