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 +3.1
-0.1
Ceara 1 CRB 2 +2.2
Bragantino 1 Joinville 0 +0.6
-0.1
Avai 1 Guarani 0 +0.3
-0.3
ASA 2 Atletico-PR 3 +0.1
Sao Caetano 4 Boa Esporte 2 +0.1
America-MG 3 ABC 3 -0.0
Week of 11/17100.0*Serie C**100.0*Average seed
CRB 2 Guarani 1 +8.7
-0.6
Ipatinga 2 Guaratingueta 3 +8.1
-0.2
Ceara 1 Bragantino 2 +6.8
-0.3
Week of 11/23100.0*Serie C**100.0*Average seed
Guarani 1 Sao Caetano 2 +34.2
-0.7
ASA 2 CRB 4 +16.9
-0.6
Guaratingueta 2 Barueri 1 +14.6
-0.2
Bragantino 3 Boa Esporte 0 +3.5
-0.1
Points
Chance Will Win Championship