-49.13% is the change from 686 to 349
Calculation steps:
[( 349 - 686 ) ÷ 686] x 100 = -49.13%
Formula
Percentage change = [(349 - 686) / 686] x 100
Subtract the new number by the original number
349 - 686 = -337
-337 ÷ 686 = -0.4912536443148688
-0.4912536443148688 x 100 = -49.13%