How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Chance wins title100.0*Average seed
Sao Paulo 1 Fluminense 4 -14.4
-0.2
Vitoria 1 Corinthians 1 -11.9
-0.1
Cruzeiro 3 Vasco da Gama 1 -4.2
-0.1
Week of 11/28100.0*Chance wins title100.0*Average seed
Corinthians 2 Vasco da Gama 0 +21.0
+0.4
Palmeiras 1 Fluminense 2 -18.2
-0.2
Flamengo 1 Cruzeiro 2 -4.3
-0.2
Week of 12/5100.0*Chance wins title100.0*Average seed
Fluminense 1 Guarani 0 No
-0.3
Goias 1 Corinthians 1 -19.0
-0.4
Cruzeiro 2 Palmeiras 1 -2.7
-0.2
Points
Chance Will Win Championship