-85.13% is the change from 686 to 102
Calculation steps:
[( 102 - 686 ) ÷ 686] x 100 = -85.13%
Formula
Percentage change = [(102 - 686) / 686] x 100
Subtract the new number by the original number
102 - 686 = -584
-584 ÷ 686 = -0.8513119533527697
-0.8513119533527697 x 100 = -85.13%