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 +16.2
Yes
+0.2
Vasco da Gama 2 Avai 0 -8.5
-0.1
Figueirense 0 Fluminense 4 -2.9
Atletico-GO 0 Flamengo 0 Yes
Week of 11/27100.0*Chance wins title100.0*Libertadores100.0*Average seed
Figueirense 0 Corinthians 1 +14.2
+0.1
Fluminense 1 Vasco da Gama 2 -13.0
-0.1
Week of 12/4100.0*Chance wins title100.0*Libertadores100.0*Average seed
Corinthians 0 Palmeiras 0 Yes
+0.1
Vasco da Gama 1 Flamengo 1 Yes
+0.1
Points
Chance Will Win Championship