-45.72% is the change from 993 to 539
Calculation steps:
[( 539 - 993 ) ÷ 993] x 100 = -45.72%
Formula
Percentage change = [(539 - 993) / 993] x 100
Subtract the new number by the original number
539 - 993 = -454
-454 ÷ 993 = -0.45720040281973817
-0.45720040281973817 x 100 = -45.72%