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 +2.5
Guaratingueta 1 Vitoria 0 +2.0
Avai 1 Guarani 0 +0.9
-0.6
Bragantino 1 Joinville 0 +0.6
-0.1
Sao Caetano 4 Boa Esporte 2 +0.1
ASA 2 Atletico-PR 3 +0.1
America-MG 3 ABC 3 +0.0
Week of 11/17100.0*Serie C**100.0*Average seed
CRB 2 Guarani 1 +11.6
-0.9
Ceara 1 Bragantino 2 +4.3
-0.2
Ipatinga 2 Guaratingueta 3 +4.2
-0.1
Week of 11/23100.0*Serie C**100.0*Average seed
Guarani 1 Sao Caetano 2 +37.3
-0.9
ASA 2 CRB 4 +17.7
-0.4
Guaratingueta 2 Barueri 1 +17.7
-0.3
Bragantino 3 Boa Esporte 0 +4.6
-0.1
Points
Chance Will Win Championship