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 -24.9
+0.8
Botafogo 3 Sao Paulo 2 +11.1
-0.2
Corinthians 2 Nautico 3 +1.2
-0.1
Santo Andre 4 Avai 2 +1.1
-0.1
Santos 4 Coritiba 0 -0.6
Vitoria 2 Barueri 1 +0.6
-0.1
Atletico-PR 1 Cruzeiro 1 +0.2
Week of 11/29100.0*Serie B100.0*Average seed
Fluminense 4 Vitoria 0 -29.8
+0.9
Cruzeiro 4 Coritiba 1 -7.7
+0.2
Atletico-PR 2 Botafogo 0 -4.6
Santo Andre 5 Nautico 3 +0.1
-0.0
Week of 12/5100.0*Serie B100.0*Average seed
Botafogo 2 Palmeiras 1 +23.0
-0.4
Coritiba 1 Fluminense 1 No
-0.1
Barueri 0 Atletico-PR 0 -0.2
Vitoria 2 Goias 2 -0.1
Points
Chance Will Win Championship