How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance wins title100.0*Libertadores100.0*Average seed
Sao Paulo 1 Cruzeiro 0 Yes
+0.3
Parana 1 Palmeiras 1 No
Sport Recife 0 Flamengo 1 -0.1
Vasco da Gama 2 Sao Paulo 0 -0.5
Gremio 2 Chapecoense 0 -0.1
Internacional 1 Atletico-MG 2 +0.1
Flamengo 2 Gremio 0 +0.1
Week of 11/25100.0*Chance wins title100.0*Libertadores100.0*Average seed
Sao Paulo 0 Sport Recife 0 -0.2
Vitoria 0 Gremio 0 +0.1
Internacional 2 Fluminense 0 -0.1
Week of 12/1100.0*Chance wins title100.0*Libertadores100.0*Average seed
Chapecoense 1 Sao Paulo 0 -0.3
Gremio 1 Corinthians 0 -0.3
Points
Chance Will Win Championship