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*Serie A100.0*Average seed
Brasiliense 2 Juventude 2 -0.8
-0.1
Gremio Barueri 1 Fortaleza 0 -0.7
-0.0
Parana 1 Ponte Preta 0 +0.2
+0.1
Bragantino 3 Avai 2 -0.2
-0.1
Corinthians 3 Vila Nova 1 +0.2
+0.1
Sao Caetano 1 America-RN 2 +0.2
Sao Caetano 2 Juventude 1 -0.4
Week of 11/21100.0*Serie A100.0*Average seed
Brasiliense 2 Vila Nova 1 +0.1
Bahia 2 Marilia 1 -0.0
Week of 11/28100.0*Serie A100.0*Average seed
Juventude 3 Gremio Barueri 2 +0.6
Vila Nova 2 Bragantino 0 -0.2
Avai 2 Sao Caetano 2 -0.1
Ponte Preta 3 Criciuma 1 -0.1
Gama 0 Bahia 0 +0.1
Points
Chance Will Win Championship