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
America-MG 2 Santos 1 -16.2
+0.8
Palmeiras 4 America-MG 0 +10.6
-0.5
Vasco da Gama 2 Sao Paulo 0 +8.1
-0.2
Ceara 1 Parana 0 +3.9
-0.1
Cruzeiro 3 Vitoria 0 -2.0
+0.1
Gremio 2 Chapecoense 0 -1.6
+0.1
Chapecoense 2 Sport Recife 1 +1.5
-0.1
Vitoria 1 Atletico-PR 2 -1.1
+0.1
Corinthians 1 Vasco da Gama 0 -1.1
Sport Recife 0 Flamengo 1 -1.0
+0.0
Bahia 2 Fluminense 0 -0.1
Week of 11/25100.0*Serie B100.0*Average seed
America-MG 1 Bahia 0 -24.5
+1.1
Corinthians 0 Chapecoense 0 +1.9
-0.0
Internacional 2 Fluminense 0 -0.3
+0.0
Vitoria 0 Gremio 0 -0.2
+0.0
Vasco da Gama 0 Palmeiras 1 -0.1
Atletico-PR 2 Ceara 2 -0.1
Week of 12/1100.0*Serie B100.0*Average seed
Fluminense 1 America-MG 0 Yes
-1.2
Chapecoense 1 Sao Paulo 0 +8.1
-0.4
Sport Recife 2 Santos 1 +8.1
-0.4
Palmeiras 3 Vitoria 2 +0.0
Points
Chance Will Win Championship