-49.85% is the change from 676 to 339
Calculation steps:
[( 339 - 676 ) ÷ 676] x 100 = -49.85%
Formula
Percentage change = [(339 - 676) / 676] x 100
Subtract the new number by the original number
339 - 676 = -337
-337 ÷ 676 = -0.4985207100591716
-0.4985207100591716 x 100 = -49.85%