-96.98% is the change from 993 to 30
Calculation steps:
[( 30 - 993 ) ÷ 993] x 100 = -96.98%
Formula
Percentage change = [(30 - 993) / 993] x 100
Subtract the new number by the original number
30 - 993 = -963
-963 ÷ 993 = -0.9697885196374623
-0.9697885196374623 x 100 = -96.98%