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*Libertadores*100.0*Average seed
Sport 2 Botafogo 0 -1.5
-0.4
Sao Paulo 2 Nautico 1 -1.3
Inter 0 Corinthians 2 -0.2
-0.1
Week of 11/25100.0*Libertadores*100.0*Average seed
Botafogo 2 Atletico-MG 3 -0.7
Inter 0 Portuguesa 2 +0.1
Week of 12/1100.0*Libertadores*100.0*Average seed
Fluminense 1 Vasco 2 -0.6
Atletico-MG 3 Cruzeiro 2 +0.2
Flamengo 2 Botafogo 2 +0.0
Points
Chance Will Win Championship