-48.98% is the change from 686 to 350
Calculation steps:
[( 350 - 686 ) ÷ 686] x 100 = -48.98%
Formula
Percentage change = [(350 - 686) / 686] x 100
Subtract the new number by the original number
350 - 686 = -336
-336 ÷ 686 = -0.4897959183673469
-0.4897959183673469 x 100 = -48.98%