-50.35% is the change from 993 to 493
Calculation steps:
[( 493 - 993 ) ÷ 993] x 100 = -50.35%
Formula
Percentage change = [(493 - 993) / 993] x 100
Subtract the new number by the original number
493 - 993 = -500
-500 ÷ 993 = -0.5035246727089627
-0.5035246727089627 x 100 = -50.35%