-53.5% is the change from 686 to 319
Calculation steps:
[( 319 - 686 ) ÷ 686] x 100 = -53.5%
Formula
Percentage change = [(319 - 686) / 686] x 100
Subtract the new number by the original number
319 - 686 = -367
-367 ÷ 686 = -0.5349854227405247
-0.5349854227405247 x 100 = -53.5%