-32.46% is the change from 989 to 668
Calculation steps:
[( 668 - 989 ) ÷ 989] x 100 = -32.46%
Formula
Percentage change = [(668 - 989) / 989] x 100
Subtract the new number by the original number
668 - 989 = -321
-321 ÷ 989 = -0.32457027300303337
-0.32457027300303337 x 100 = -32.46%