How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Chance wins title100.0*Average seed
Joinville 3 Ponte Preta 1 -24.4
-0.2
Boa Esporte 1 Joinville 0 +15.6
+0.2
Ponte Preta 2 America-RN 2 -11.5
-0.1
Week of 11/21None
Week of 11/29100.0*Chance wins title100.0*Average seed
Oeste 1 Joinville 0 +24.0
+0.2
Nautico 1 Ponte Preta 1 No
-0.1
Points
Chance Will Win Championship