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
Chapecoense 2 Sport Recife 1 +25.3
-1.2
Sport Recife 0 Flamengo 1 +14.3
-0.9
Ceara 1 Parana 0 +3.9
-0.2
Vasco da Gama 2 Sao Paulo 0 +3.9
-0.2
Palmeiras 4 America-MG 0 -3.8
+0.1
Cruzeiro 3 Vitoria 0 -3.3
+0.1
Vitoria 1 Atletico-PR 2 -3.0
+0.1
Gremio 2 Chapecoense 0 -2.8
+0.1
America-MG 2 Santos 1 +2.6
-0.1
Corinthians 1 Vasco da Gama 0 -0.9
Bahia 2 Fluminense 0 -0.4
+0.0
Atletico-PR 1 Corinthians 0 -0.1
+0.1
Atletico-MG 1 Bahia 0 +0.1
Botafogo 1 Internacional 0 -0.1
Week of 11/25100.0*Serie B100.0*Average seed
America-MG 1 Bahia 0 +3.9
-0.2
Corinthians 0 Chapecoense 0 -3.6
+0.1
Vasco da Gama 0 Palmeiras 1 -2.4
+0.1
Vitoria 0 Gremio 0 -1.9
+0.1
Internacional 2 Fluminense 0 -1.7
+0.1
Atletico-PR 2 Ceara 2 +1.3
Week of 12/1100.0*Serie B100.0*Average seed
Sport Recife 2 Santos 1 -44.1
+1.4
Chapecoense 1 Sao Paulo 0 +14.0
-0.2
Ceara 0 Vasco da Gama 0 +5.8
-0.1
Fluminense 1 America-MG 0 -2.0
+0.1
Palmeiras 3 Vitoria 2 +0.2
Points
Chance Will Win Championship