-48.25% is the change from 686 to 355
Calculation steps:
[( 355 - 686 ) ÷ 686] x 100 = -48.25%
Formula
Percentage change = [(355 - 686) / 686] x 100
Subtract the new number by the original number
355 - 686 = -331
-331 ÷ 686 = -0.48250728862973763
-0.48250728862973763 x 100 = -48.25%