-2.7% is the change from 705 to 686
Calculation steps:
[( 686 - 705 ) ÷ 705] x 100 = -2.7%
Formula
Percentage change = [(686 - 705) / 705] x 100
Subtract the new number by the original number
686 - 705 = -19
-19 ÷ 705 = -0.02695035460992908
-0.02695035460992908 x 100 = -2.7%