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 C100.0*Average seed
Sao Caetano 1 America-RN 2 +8.9
-0.3
Gremio Barueri 1 Fortaleza 0 -4.6
+0.1
Criciuma 2 Gama 0 +3.0
-0.1
ABC 1 Marilia 1 -2.8
-0.0
Parana 1 Ponte Preta 0 +0.2
-0.1
Brasiliense 2 Juventude 2 +0.2
+0.0
Bahia 2 CRB 0 -0.0
Parana 4 CRB 0 -0.0
Week of 11/21100.0*Serie C100.0*Average seed
Bragantino 0 Fortaleza 1 +18.5
-0.4
Bahia 2 Marilia 1 +11.1
-0.5
Criciuma 4 Santo Andre 4 -7.6
+0.1
Gremio Barueri 3 America-RN 0 -0.7
+0.1
Brasiliense 2 Vila Nova 1 +0.4
-0.1
ABC 1 Ponte Preta 1 +0.1
-0.0
Ceara 1 Gama 0 -0.0
Week of 11/28100.0*Serie C100.0*Average seed
Marilia 2 Ceara 1 -45.6
+0.9
America-RN 2 Corinthians 0 +15.5
-0.4
Fortaleza 3 Brasiliense 0 +9.6
-0.3
Ponte Preta 3 Criciuma 1 -1.2
+0.2
CRB 1 ABC 3 +0.4
-0.0
Points
Chance Will Win Championship