-87.32% is the change from 686 to 87
Calculation steps:
[( 87 - 686 ) ÷ 686] x 100 = -87.32%
Formula
Percentage change = [(87 - 686) / 686] x 100
Subtract the new number by the original number
87 - 686 = -599
-599 ÷ 686 = -0.8731778425655977
-0.8731778425655977 x 100 = -87.32%