-49.42% is the change from 684 to 346
Calculation steps:
[( 346 - 684 ) ÷ 684] x 100 = -49.42%
Formula
Percentage change = [(346 - 684) / 684] x 100
Subtract the new number by the original number
346 - 684 = -338
-338 ÷ 684 = -0.49415204678362573
-0.49415204678362573 x 100 = -49.42%