-51.76% is the change from 993 to 479
Calculation steps:
[( 479 - 993 ) ÷ 993] x 100 = -51.76%
Formula
Percentage change = [(479 - 993) / 993] x 100
Subtract the new number by the original number
479 - 993 = -514
-514 ÷ 993 = -0.5176233635448136
-0.5176233635448136 x 100 = -51.76%