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
Botafogo 3 Sao Paulo 2 -26.7
+0.9
Sport Recife 0 Fluminense 3 +13.8
-0.2
Corinthians 2 Nautico 3 +2.2
-0.1
Santo Andre 4 Avai 2 +1.9
-0.1
Santos 4 Coritiba 0 -0.9
Atletico-PR 1 Cruzeiro 1 +0.7
-0.0
Vitoria 2 Barueri 1 +0.6
-0.1
Week of 11/29100.0*Serie B100.0*Average seed
Atletico-PR 2 Botafogo 0 +21.4
-1.0
Fluminense 4 Vitoria 0 +16.8
-0.2
Cruzeiro 4 Coritiba 1 -5.5
+0.2
Santo Andre 5 Nautico 3 +0.3
Week of 12/5100.0*Serie B100.0*Average seed
Botafogo 2 Palmeiras 1 No
+1.0
Coritiba 1 Fluminense 1 +10.2
+0.1
Internacional 4 Santo Andre 1 +0.1
Points
Chance Will Win Championship