-48.97% is the change from 678 to 346
Calculation steps:
[( 346 - 678 ) ÷ 678] x 100 = -48.97%
Formula
Percentage change = [(346 - 678) / 678] x 100
Subtract the new number by the original number
346 - 678 = -332
-332 ÷ 678 = -0.4896755162241888
-0.4896755162241888 x 100 = -48.97%