-87.17% is the change from 686 to 88
Calculation steps:
[( 88 - 686 ) ÷ 686] x 100 = -87.17%
Formula
Percentage change = [(88 - 686) / 686] x 100
Subtract the new number by the original number
88 - 686 = -598
-598 ÷ 686 = -0.8717201166180758
-0.8717201166180758 x 100 = -87.17%