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*Libertadores100.0*Average seed
Sao Paulo 2 Nautico 1 +2.2
+0.0
Inter 0 Corinthians 2 -1.9
Sport 2 Botafogo 0 +1.4
Atletico-MG 2 Atletico-GO 2 +0.0
Week of 11/25100.0*Libertadores100.0*Average seed
Botafogo 2 Atletico-MG 3 -0.1
Ponte Preta 0 Sao Paulo 0 -0.1
Figueirense 2 Gremio 4 -0.0
Week of 12/1None
Points
Chance Will Win Championship