-84.47% is the change from 998 to 155
Calculation steps:
[( 155 - 998 ) ÷ 998] x 100 = -84.47%
Formula
Percentage change = [(155 - 998) / 998] x 100
Subtract the new number by the original number
155 - 998 = -843
-843 ÷ 998 = -0.844689378757515
-0.844689378757515 x 100 = -84.47%