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
Gremio Barueri 1 Fortaleza 0 +12.5
+0.2
Bragantino 3 Avai 2 -4.5
-0.1
Corinthians 3 Vila Nova 1 +3.7
+0.1
Parana 1 Ponte Preta 0 +3.3
+0.1
Brasiliense 2 Juventude 2 +0.4
Ceara 2 Santo Andre 3 -0.2
-0.1
Week of 11/21100.0*Serie A100.0*Average seed
Gremio Barueri 3 America-RN 0 Yes
+0.1
Bragantino 0 Fortaleza 1 +5.5
+0.1
Brasiliense 2 Vila Nova 1 +1.0
Criciuma 4 Santo Andre 4 +0.0
Week of 11/28100.0*Serie A100.0*Average seed
Santo Andre 3 Parana 1 -0.1
Avai 2 Sao Caetano 2 -0.1
Juventude 3 Gremio Barueri 2 -0.1
Points
Chance Will Win Championship