-97.29% is the change from 998 to 27
Calculation steps:
[( 27 - 998 ) ÷ 998] x 100 = -97.29%
Formula
Percentage change = [(27 - 998) / 998] x 100
Subtract the new number by the original number
27 - 998 = -971
-971 ÷ 998 = -0.9729458917835672
-0.9729458917835672 x 100 = -97.29%