-51.96% is the change from 993 to 477
Calculation steps:
[( 477 - 993 ) ÷ 993] x 100 = -51.96%
Formula
Percentage change = [(477 - 993) / 993] x 100
Subtract the new number by the original number
477 - 993 = -516
-516 ÷ 993 = -0.5196374622356495
-0.5196374622356495 x 100 = -51.96%