-90.28% is the change from 998 to 97
Calculation steps:
[( 97 - 998 ) ÷ 998] x 100 = -90.28%
Formula
Percentage change = [(97 - 998) / 998] x 100
Subtract the new number by the original number
97 - 998 = -901
-901 ÷ 998 = -0.9028056112224448
-0.9028056112224448 x 100 = -90.28%