How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Serie A100.0*Average seed
Sport Recife 2 Parana 0 +20.6
+0.7
Guaratingueta 0 Ceara 1 -7.0
-0.2
Icasa 2 Paysandu 1 -3.7
-0.1
Oeste 2 Figueirense 2 +2.6
+0.1
Avai 0 America-RN 1 +1.1
+0.1
Sao Caetano 3 Joinville 2 +0.8
+0.1
America-MG 3 Atletico-GO 0 -0.6
-0.1
Week of 11/22100.0*Serie A100.0*Average seed
Boa Esporte 2 Sport Recife 3 +20.2
+0.6
Icasa 1 Chapecoense 2 +8.3
+0.2
Palmeiras 4 Ceara 1 +4.6
+0.1
Joinville 2 America-MG 1 +1.4
+0.1
Figueirense 2 ASA 0 -1.3
-0.0
Week of 11/29None
Points
Chance Will Win Championship