How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Serie B100.0*Average seed
Sport Recife 1 Bahia 0 -7.7
+0.7
Fluminense 2 Ponte Preta 0 -3.1
+0.1
Avai 2 Palmeiras 1 +0.6
-0.2
Atletico-MG 3 Coritiba 0 -0.3
Vitoria 1 Cruzeiro 1 +0.1
-0.0
Atletico-GO 1 Chapecoense 1 +0.0
Week of 11/25100.0*Serie B100.0*Average seed
Fluminense 1 Sport Recife 2 -20.7
+0.9
Week of 12/3100.0*Serie B100.0*Average seed
Sport Recife 1 Corinthians 0 -66.1
+1.5
Chapecoense 2 Coritiba 1 -5.1
+0.1
Santos 1 Avai 1 -1.2
-0.2
Vitoria 1 Flamengo 2 +0.3
Vasco da Gama 2 Ponte Preta 1 +0.2
Points
Chance Will Win Championship