-48.1% is the change from 686 to 356
Calculation steps:
[( 356 - 686 ) ÷ 686] x 100 = -48.1%
Formula
Percentage change = [(356 - 686) / 686] x 100
Subtract the new number by the original number
356 - 686 = -330
-330 ÷ 686 = -0.48104956268221577
-0.48104956268221577 x 100 = -48.1%