How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance wins title100.0*Libertadores100.0*Average seed
Corinthians 2 Atletico-MG 1 -13.9
-0.1
Vasco da Gama 2 Avai 0 +9.2
Yes
+0.2
Figueirense 0 Fluminense 4 -1.1
-0.1
Sao Paulo 3 America-MG 1 -0.1
Week of 11/27100.0*Chance wins title100.0*Libertadores100.0*Average seed
Fluminense 1 Vasco da Gama 2 +16.0
+0.4
Figueirense 0 Corinthians 1 -11.1
-0.1
Week of 12/4100.0*Chance wins title100.0*Libertadores100.0*Average seed
Corinthians 0 Palmeiras 0 No
-0.1
Vasco da Gama 1 Flamengo 1 No
-0.1
Points
Chance Will Win Championship