How are these numbers calculated?

Big Games

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

Week of 11/9100.0*Serie C**100.0*Average seed
Ceara 1 CRB 2 -12.9
+0.6
Bragantino 1 Joinville 0 +7.1
-0.2
Guaratingueta 1 Vitoria 0 +2.8
-0.2
Parana 2 Ipatinga 0 -0.2
+0.1
Avai 1 Guarani 0 -0.1
Week of 11/17100.0*Serie C**100.0*Average seed
CRB 2 Guarani 1 -23.3
+0.7
Ceara 1 Bragantino 2 +7.9
-0.2
Ipatinga 2 Guaratingueta 3 +7.9
-0.2
Week of 11/23100.0*Serie C**100.0*Average seed
ASA 2 CRB 4 -44.4
+1.2
Guaratingueta 2 Barueri 1 +10.7
-0.2
Bragantino 3 Boa Esporte 0 +10.7
-0.2
Guarani 1 Sao Caetano 2 -6.2
+0.1
Points
Chance Will Win Championship