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
Bragantino 1 Joinville 0 -26.7
+0.6
Guaratingueta 1 Vitoria 0 +19.7
-0.2
Ceara 1 CRB 2 +10.0
-0.2
Parana 2 Ipatinga 0 -0.3
Avai 1 Guarani 0 -0.2
Week of 11/17100.0*Serie C**100.0*Average seed
Ceara 1 Bragantino 2 -38.2
+1.2
Ipatinga 2 Guaratingueta 3 +18.6
-0.3
CRB 2 Guarani 1 +2.2
-0.1
Week of 11/23100.0*Serie C**100.0*Average seed
Bragantino 3 Boa Esporte 0 No
+1.4
ASA 2 CRB 4 +20.4
-0.4
Guarani 1 Sao Caetano 2 -13.8
+0.2
Guaratingueta 2 Barueri 1 +7.2
-0.2
ABC 2 America-RN 2 -0.1
Points
Chance Will Win Championship