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 -26.8
+0.8
America-MG 2 Sport Recife 2 -0.3
+0.1
Week of 12/4100.0*Serie B100.0*Average seed
Fluminense 1 Internacional 1 No
+0.1
Sport Recife 2 Figueirense 0 +4.5
-0.4
Vitoria 1 Palmeiras 2 +4.0
-0.5
Ponte Preta 2 Coritiba 0 +0.2
Cruzeiro 3 Corinthians 2 -0.1
Points
Chance Will Win Championship