-48.05% is the change from 668 to 347
Calculation steps:
[( 347 - 668 ) ÷ 668] x 100 = -48.05%
Formula
Percentage change = [(347 - 668) / 668] x 100
Subtract the new number by the original number
347 - 668 = -321
-321 ÷ 668 = -0.4805389221556886
-0.4805389221556886 x 100 = -48.05%