-53.64% is the change from 686 to 318
Calculation steps:
[( 318 - 686 ) ÷ 686] x 100 = -53.64%
Formula
Percentage change = [(318 - 686) / 686] x 100
Subtract the new number by the original number
318 - 686 = -368
-368 ÷ 686 = -0.5364431486880467
-0.5364431486880467 x 100 = -53.64%