-90.98% is the change from 998 to 90
Calculation steps:
[( 90 - 998 ) ÷ 998] x 100 = -90.98%
Formula
Percentage change = [(90 - 998) / 998] x 100
Subtract the new number by the original number
90 - 998 = -908
-908 ÷ 998 = -0.9098196392785571
-0.9098196392785571 x 100 = -90.98%