How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Chance wins title100.0*Average seed
Botafogo 0 Santa Cruz 3 -6.8
-0.1
Parana 1 America-MG 0 +4.1
+0.0
Vitoria 1 Ceara 0 -0.1
Week of 11/20100.0*Chance wins title100.0*Average seed
ABC 1 Botafogo 2 Yes
+0.1
Week of 11/27None
Points
Chance Will Win Championship