How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie C100.0*Average seed
Guarani 1 America-RN 2 +16.0
-0.9
CRB 3 Ituano 4 -1.9
+0.1
Sao Raimundo-AM 3 Santo Andre 2 +1.9
-0.2
Vila Nova 2 Paysandu 1 +1.7
-0.1
Portuguesa 2 Ceara 4 -0.3
+0.1
Week of 11/18100.0*Serie C100.0*Average seed
Guarani 2 Sport Recife 0 -14.5
+1.0
Paulista 9 Paysandu 0 -2.2
+0.1
Avai 1 CRB 2 +1.6
-0.2
Portuguesa 2 Vila Nova 0 -0.7
-0.2
Remo 3 Sao Raimundo-AM 0 -0.5
+0.1
Week of 11/25100.0*Serie C100.0*Average seed
Vila Nova 1 Guarani 5 -43.9
+1.8
CRB 2 Remo 1 +11.5
-0.3
Sport Recife 2 Portuguesa 3 +11.5
-0.3
Paysandu 4 Marilia 1 +11.5
-0.3
Sao Raimundo-AM 2 Gama 0 +0.8
-0.4
Points
Chance Will Win Championship