-83.52% is the change from 989 to 163
Calculation steps:
[( 163 - 989 ) ÷ 989] x 100 = -83.52%
Formula
Percentage change = [(163 - 989) / 989] x 100
Subtract the new number by the original number
163 - 989 = -826
-826 ÷ 989 = -0.8351870576339737
-0.8351870576339737 x 100 = -83.52%