How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Serie B100.0*Average seed
Sport Recife 0 Fluminense 3 +3.1
-0.1
Botafogo 3 Sao Paulo 2 +1.7
-0.2
Atletico-PR 1 Cruzeiro 1 -1.3
-0.2
Corinthians 2 Nautico 3 +0.6
Santo Andre 4 Avai 2 +0.5
Santos 4 Coritiba 0 -0.4
-0.0
Vitoria 2 Barueri 1 +0.3
-0.1
Week of 11/29100.0*Serie B100.0*Average seed
Atletico-PR 2 Botafogo 0 No
+1.2
Fluminense 4 Vitoria 0 +9.0
-0.1
Cruzeiro 4 Coritiba 1 -3.2
+0.2
Santo Andre 5 Nautico 3 +0.5
Gremio 4 Barueri 2 +0.1
Week of 12/5100.0*Serie B100.0*Average seed
Barueri 0 Atletico-PR 0 -0.4
Atletico-MG 0 Corinthians 3 -0.2
Coritiba 1 Fluminense 1 +0.2
Santos 1 Cruzeiro 2 +0.1
Vitoria 2 Goias 2 -0.1
Points
Chance Will Win Championship