How are these numbers calculated?

Big Games

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

Week of 5/24100.0*Relegated100.0*Average seed
Torino 2 Genoa 3 +21.6
-0.2
Chievo 0 Bologna 0 +9.1
-0.1
Calcio Catania 3 Napoli 1 -0.3
Lecce 1 Fiorentina 1 -0.3
AC Milan 2 AS Roma 3 +0.2
Week of 5/31100.0*Relegated100.0*Average seed
Bologna 3 Calcio Catania 1 +15.3
-0.2
AS Roma 3 Torino 2 +13.0
-0.1
Fiorentina 0 AC Milan 2 +0.1
Points
Chance Will Win Championship