How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Serie B100.0*Average seed
Corinthians 1 Bahia 2 -24.7
+0.8
Fortaleza 5 Parana 3 +6.9
-0.2
Criciuma 0 Gremio 2 +6.8
-0.2
Ponte Preta 1 Sao Paulo 2 -4.8
+0.1
Fluminense 2 Sao Caetano 1 +3.9
-0.1
Juventude 1 Atletico-MG 0 +1.9
-0.1
Cruzeiro 2 Paysandu 1 -0.5
Vasco da Gama 1 Figueirense 0 +0.1
Week of 12/6100.0*Serie B100.0*Average seed
Criciuma 3 Bahia 2 +26.2
-1.0
Cruzeiro 5 Fluminense 2 -3.4
+0.2
Guarani 2 Paysandu 1 -3.2
+0.2
Santos 2 Gremio 2 -2.0
+0.0
Fortaleza 2 Coritiba 2 -1.0
+0.1
Flamengo 1 Ponte Preta 1 -0.9
+0.0
Juventude 2 Sao Caetano 1 +0.4
-0.1
Week of 12/13100.0*Serie B100.0*Average seed
Bahia 0 Cruzeiro 7 Yes
-1.0
Gremio 3 Corinthians 0 +10.3
-0.3
Paysandu 2 Atletico-PR 2 +3.0
-0.1
Fluminense 1 Juventude 0 +3.0
-0.1
Ponte Preta 2 Fortaleza 0 +0.8
-0.1
Points
Chance Will Win Championship