-83.67% is the change from 998 to 163
Calculation steps:
[( 163 - 998 ) ÷ 998] x 100 = -83.67%
Formula
Percentage change = [(163 - 998) / 998] x 100
Subtract the new number by the original number
163 - 998 = -835
-835 ÷ 998 = -0.8366733466933868
-0.8366733466933868 x 100 = -83.67%