-97.78% is the change from 993 to 22
Calculation steps:
[( 22 - 993 ) ÷ 993] x 100 = -97.78%
Formula
Percentage change = [(22 - 993) / 993] x 100
Subtract the new number by the original number
22 - 993 = -971
-971 ÷ 993 = -0.9778449144008057
-0.9778449144008057 x 100 = -97.78%