-29.15% is the change from 686 to 486
Calculation steps:
[( 486 - 686 ) ÷ 686] x 100 = -29.15%
Formula
Percentage change = [(486 - 686) / 686] x 100
Subtract the new number by the original number
486 - 686 = -200
-200 ÷ 686 = -0.2915451895043732
-0.2915451895043732 x 100 = -29.15%