-97.19% is the change from 998 to 28
Calculation steps:
[( 28 - 998 ) ÷ 998] x 100 = -97.19%
Formula
Percentage change = [(28 - 998) / 998] x 100
Subtract the new number by the original number
28 - 998 = -970
-970 ÷ 998 = -0.9719438877755511
-0.9719438877755511 x 100 = -97.19%