-98.99% is the change from 993 to 10
Calculation steps:
[( 10 - 993 ) ÷ 993] x 100 = -98.99%
Formula
Percentage change = [(10 - 993) / 993] x 100
Subtract the new number by the original number
10 - 993 = -983
-983 ÷ 993 = -0.9899295065458208
-0.9899295065458208 x 100 = -98.99%