How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie B**100.0*Average seed
Bahia 1 Ponte Preta 0 -0.8
Sao Paulo 2 Nautico 1 +0.1
Fluminense 0 Cruzeiro 2 -0.3
Flamengo 1 Palmeiras 1 +0.1
Week of 11/25100.0*Serie B**100.0*Average seed
Inter 0 Portuguesa 2 -0.1
Ponte Preta 0 Sao Paulo 0 No
-0.4
Sport 1 Fluminense 1 No
Cruzeiro 2 Coritiba 1 +0.1
Week of 12/1100.0*Serie B**100.0*Average seed
Portuguesa 0 Ponte Preta 0 -0.4
Coritiba 3 Figueirense 0 -0.3
Nautico 1 Sport 0 -0.2
Flamengo 2 Botafogo 2 +0.1
Santos 3 Palmeiras 1 -0.0
Points
Chance Will Win Championship