-48.53% is the change from 678 to 349
Calculation steps:
[( 349 - 678 ) ÷ 678] x 100 = -48.53%
Formula
Percentage change = [(349 - 678) / 678] x 100
Subtract the new number by the original number
349 - 678 = -329
-329 ÷ 678 = -0.48525073746312686
-0.48525073746312686 x 100 = -48.53%