How are these numbers calculated?

Big Games

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

Week of 11/26100.0*Serie B100.0*Average seed
Coritiba 0 Vitoria 1 +17.5
-0.2
America-MG 2 Sport Recife 2 -0.8
Week of 12/4100.0*Serie B100.0*Average seed
Fluminense 1 Internacional 1 Yes
-0.3
Sport Recife 2 Figueirense 0 +12.7
-0.2
Vitoria 1 Palmeiras 2 -3.4
+0.1
Points
Chance Will Win Championship