-84.17% is the change from 998 to 158
Calculation steps:
[( 158 - 998 ) ÷ 998] x 100 = -84.17%
Formula
Percentage change = [(158 - 998) / 998] x 100
Subtract the new number by the original number
158 - 998 = -840
-840 ÷ 998 = -0.8416833667334669
-0.8416833667334669 x 100 = -84.17%