-55.79% is the change from 993 to 439
Calculation steps:
[( 439 - 993 ) ÷ 993] x 100 = -55.79%
Formula
Percentage change = [(439 - 993) / 993] x 100
Subtract the new number by the original number
439 - 993 = -554
-554 ÷ 993 = -0.5579053373615307
-0.5579053373615307 x 100 = -55.79%