-86.87% is the change from 998 to 131
Calculation steps:
[( 131 - 998 ) ÷ 998] x 100 = -86.87%
Formula
Percentage change = [(131 - 998) / 998] x 100
Subtract the new number by the original number
131 - 998 = -867
-867 ÷ 998 = -0.8687374749498998
-0.8687374749498998 x 100 = -86.87%