How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Chance wins title100.0*Serie A100.0*Average seed
Figueirense 1 America-MG 2 -14.2
-0.2
Internacional 1 Vila Nova 1 -5.5
+0.2
-0.1
Goias 0 Ceara 0 +1.8
+0.1
+0.1
Nautico 1 Londrina 2 -0.1
Week of 11/17100.0*Chance wins title100.0*Serie A100.0*Average seed
Goias 0 Internacional 2 +9.8
+0.3
Londrina 0 America-MG 0 +1.1
Criciuma 1 Ceara 1 +0.4
+0.1
CRB 0 Parana 1 -0.1
Week of 11/24100.0*Chance wins title100.0*Serie A100.0*Average seed
Internacional 2 Guarani 0 +38.4
+0.4
America-MG 1 CRB 0 No
-0.2
Points
Chance Will Win Championship