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
Icasa 2 Paysandu 1 +16.7
+0.7
Guaratingueta 0 Ceara 1 -7.3
-0.2
Sport Recife 2 Parana 0 -5.5
-0.2
Avai 0 America-RN 1 +0.8
+0.1
Oeste 2 Figueirense 2 +0.8
+0.0
Sao Caetano 3 Joinville 2 +0.6
America-MG 3 Atletico-GO 0 -0.4
Week of 11/22100.0*Serie A100.0*Average seed
Icasa 1 Chapecoense 2 -33.1
-0.8
Palmeiras 4 Ceara 1 +6.3
+0.1
Boa Esporte 2 Sport Recife 3 -5.5
-0.3
Figueirense 2 ASA 0 -3.5
-0.1
Joinville 2 America-MG 1 +1.0
+0.1
Week of 11/29100.0*Serie A100.0*Average seed
Parana 2 Icasa 0 -21.7
-0.5
Ceara 0 Joinville 3 +5.8
+0.5
Bragantino 1 Figueirense 1 +2.7
-0.0
Points
Chance Will Win Championship