-4.85% is the change from 721 to 686
Calculation steps:
[( 686 - 721 ) ÷ 721] x 100 = -4.85%
Formula
Percentage change = [(686 - 721) / 721] x 100
Subtract the new number by the original number
686 - 721 = -35
-35 ÷ 721 = -0.04854368932038835
-0.04854368932038835 x 100 = -4.85%