How are these numbers calculated?

Big Games

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

Week of 11/12100.0*Chance wins title100.0*Serie A100.0*Average seed
Botafogo 2 Operario-PR 1 +15.6
Yes
+0.2
Coritiba 2 Brasil-RS 1 -7.9
-0.1
Remo 0 Goias 1 -0.4
-0.1
Brusque 1 CRB 0 +0.1
+0.1
CSA 0 Confianca 0 +0.1
+0.1
Week of 11/19100.0*Chance wins title100.0*Serie A100.0*Average seed
Coritiba 0 CSA 1 +13.5
+0.1
Brasil-RS 0 Botafogo 1 +9.3
+0.1
Week of 11/26None
Points
Chance Will Win Championship