How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Serie B100.0*Average seed
Atletico-MG 1 Bahia 0 +0.1
Vitoria 1 Atletico-PR 2 -1.0
America-MG 2 Santos 1 +1.0
Botafogo 1 Internacional 0 -0.1
Bahia 2 Fluminense 0 +1.8
-1.0
Gremio 2 Chapecoense 0 -0.8
+0.1
Palmeiras 4 America-MG 0 -0.8
+0.1
Cruzeiro 3 Vitoria 0 -0.7
Sport Recife 0 Flamengo 1 -0.7
+0.1
Ceara 1 Parana 0 +0.6
-0.1
Vasco da Gama 2 Sao Paulo 0 +0.6
-0.1
Corinthians 1 Vasco da Gama 0 -0.3
-0.1
Chapecoense 2 Sport Recife 1 +0.1
Atletico-PR 1 Corinthians 0 +0.1
Week of 11/25100.0*Serie B100.0*Average seed
Internacional 2 Fluminense 0 +7.7
-1.0
America-MG 1 Bahia 0 +5.1
-0.1
Vasco da Gama 0 Palmeiras 1 -1.8
+0.2
Corinthians 0 Chapecoense 0 -1.5
+0.2
Vitoria 0 Gremio 0 -0.8
Atletico-PR 2 Ceara 2 +0.4
+0.0
Week of 12/1100.0*Serie B100.0*Average seed
Fluminense 1 America-MG 0 No
+1.7
Chapecoense 1 Sao Paulo 0 +13.0
-0.4
Sport Recife 2 Santos 1 +9.1
-0.2
Ceara 0 Vasco da Gama 0 +6.4
Gremio 1 Corinthians 0 +0.1
Points
Chance Will Win Championship