How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/16100.0*Relegated100.0*Average seed
Trofense 1 FC Porto 4 No
Vitoria Setubal 0 Leixoes 1 -0.2
+0.1
Académica 3 Naval 1º de Maio 1 +0.1
-0.3
Belenenses 1 Rio Ave 0 +0.1
CD Nacional 1 Paços Ferreira 0 +0.0
Estrela Amadora 1 Guimaraes 0 -0.1
Week of 5/23100.0*Relegated100.0*Average seed
Naval 1º de Maio 2 Vitoria Setubal 2 -0.2
Rio Ave 2 Estrela Amadora 1 -0.2
Points
Chance Will Win Championship