-97.67% is the change from 686 to 16
Calculation steps:
[( 16 - 686 ) ÷ 686] x 100 = -97.67%
Formula
Percentage change = [(16 - 686) / 686] x 100
Subtract the new number by the original number
16 - 686 = -670
-670 ÷ 686 = -0.9766763848396501
-0.9766763848396501 x 100 = -97.67%