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
Vila Nova 2 Paysandu 1 +20.3
-1.4
CRB 3 Ituano 4 -2.5
-0.0
Sao Raimundo-AM 3 Santo Andre 2 +2.1
-0.1
Guarani 1 America-RN 2 -2.1
+0.1
Portuguesa 2 Ceara 4 -1.0
-0.1
Gama 3 Marilia 0 -0.1
Avai 1 Nautico 1 +0.0
Week of 11/18100.0*Serie C100.0*Average seed
Paulista 9 Paysandu 0 +25.9
-1.1
Avai 1 CRB 2 +5.2
-0.2
Remo 3 Sao Raimundo-AM 0 -4.0
-0.0
Guarani 2 Sport Recife 0 +2.3
-0.1
Portuguesa 2 Vila Nova 0 +1.6
+0.0
Ceara 0 Atletico-MG 1 -0.1
+0.1
Week of 11/25100.0*Serie C100.0*Average seed
Paysandu 4 Marilia 1 -42.7
+1.5
Sport Recife 2 Portuguesa 3 +12.8
-0.3
CRB 2 Remo 1 +12.7
-0.3
Vila Nova 1 Guarani 5 -5.7
Sao Raimundo-AM 2 Gama 0 +2.1
-0.4
Points
Chance Will Win Championship