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 +14.7
-0.9
CRB 3 Ituano 4 -2.3
+0.2
Vila Nova 2 Paysandu 1 +1.4
-0.1
Sao Raimundo-AM 3 Santo Andre 2 +1.3
-0.2
Portuguesa 2 Ceara 4 +0.1
Week of 11/18100.0*Serie C100.0*Average seed
Guarani 2 Sport Recife 0 -11.1
+1.0
Avai 1 CRB 2 +1.7
-0.3
Paulista 9 Paysandu 0 -0.7
+0.0
Portuguesa 2 Vila Nova 0 -0.5
-0.2
Remo 3 Sao Raimundo-AM 0 -0.3
+0.1
Week of 11/25100.0*Serie C100.0*Average seed
Vila Nova 1 Guarani 5 -55.8
+2.3
Sport Recife 2 Portuguesa 3 +10.5
-0.4
Paysandu 4 Marilia 1 +6.9
-0.2
CRB 2 Remo 1 +6.0
-0.2
Sao Raimundo-AM 2 Gama 0 +0.7
-0.4
Points
Chance Will Win Championship