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
Guaratingueta 1 Vitoria 0 -25.5
+0.6
Bragantino 1 Joinville 0 +18.2
-0.2
Ceara 1 CRB 2 +2.7
-0.3
Avai 1 Guarani 0 -0.1
Parana 2 Ipatinga 0 +0.1
Week of 11/17100.0*Serie C**100.0*Average seed
Ipatinga 2 Guaratingueta 3 -34.4
+0.8
Ceara 1 Bragantino 2 +23.3
-0.3
CRB 2 Guarani 1 +3.0
-0.1
Boa Esporte 0 ABC 0 +0.3
Week of 11/23100.0*Serie C**100.0*Average seed
Guaratingueta 2 Barueri 1 -26.3
+0.5
Guarani 1 Sao Caetano 2 -17.5
+0.3
Bragantino 3 Boa Esporte 0 +11.8
-0.3
ASA 2 CRB 4 +10.2
-0.4
Points
Chance Will Win Championship