-87.98% is the change from 998 to 120
Calculation steps:
[( 120 - 998 ) ÷ 998] x 100 = -87.98%
Formula
Percentage change = [(120 - 998) / 998] x 100
Subtract the new number by the original number
120 - 998 = -878
-878 ÷ 998 = -0.8797595190380761
-0.8797595190380761 x 100 = -87.98%