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*Average seed
Botafogo 1 Internacional 0 -4.1
-0.3
Parana 1 Palmeiras 1 +3.2
+0.0
Internacional 1 Atletico-MG 2 -1.7
-0.5
Palmeiras 4 America-MG 0 -1.5
Flamengo 2 Gremio 0 -0.4
-0.1
Sport Recife 0 Flamengo 1 -0.2
-0.1
Vasco da Gama 2 Sao Paulo 0 +0.2
Week of 11/25100.0*Chance wins title100.0*Average seed
Internacional 2 Fluminense 0 +0.2
Cruzeiro 0 Flamengo 2 -0.1
Vitoria 0 Gremio 0 +0.1
Week of 12/1None
Points
Chance Will Win Championship