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
Sao Raimundo-AM 3 Santo Andre 2 -14.7
+1.1
CRB 3 Ituano 4 -2.2
+0.2
Guarani 1 America-RN 2 -1.3
+0.2
Vila Nova 2 Paysandu 1 +0.9
-0.1
Portuguesa 2 Ceara 4 +0.1
+0.1
Week of 11/18100.0*Serie C100.0*Average seed
Remo 3 Sao Raimundo-AM 0 +13.0
-0.6
Avai 1 CRB 2 +7.9
-0.3
Paulista 9 Paysandu 0 -4.4
+0.1
Guarani 2 Sport Recife 0 +3.1
-0.3
Portuguesa 2 Vila Nova 0 -2.2
-0.1
Week of 11/25100.0*Serie C100.0*Average seed
Sao Raimundo-AM 2 Gama 0 -21.9
+1.8
Sport Recife 2 Portuguesa 3 +13.4
-0.4
Paysandu 4 Marilia 1 +11.5
-0.2
CRB 2 Remo 1 +11.0
-0.2
Vila Nova 1 Guarani 5 +5.7
-0.1
Points
Chance Will Win Championship