-98.09% is the change from 993 to 19
Calculation steps:
[( 19 - 993 ) ÷ 993] x 100 = -98.09%
Formula
Percentage change = [(19 - 993) / 993] x 100
Subtract the new number by the original number
19 - 993 = -974
-974 ÷ 993 = -0.9808660624370594
-0.9808660624370594 x 100 = -98.09%