-54.52% is the change from 686 to 312
Calculation steps:
[( 312 - 686 ) ÷ 686] x 100 = -54.52%
Formula
Percentage change = [(312 - 686) / 686] x 100
Subtract the new number by the original number
312 - 686 = -374
-374 ÷ 686 = -0.5451895043731778
-0.5451895043731778 x 100 = -54.52%