-71.9% is the change from 993 to 279
Calculation steps:
[( 279 - 993 ) ÷ 993] x 100 = -71.9%
Formula
Percentage change = [(279 - 993) / 993] x 100
Subtract the new number by the original number
279 - 993 = -714
-714 ÷ 993 = -0.7190332326283988
-0.7190332326283988 x 100 = -71.9%