How are these numbers calculated?

Big Games

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

Week of 12/4100.0*Serie B100.0*Average seed
Guarani 2 Figueirense 1 -6.6
+0.6
Vitoria 1 Sao Paulo 4 -1.1
+0.1
Juventude 1 Botafogo 0 -1.0
+0.0
Criciuma 1 Parana 2 -0.4
Atletico-MG 0 Paysandu 0 -0.3
Corinthians 3 Vasco da Gama 1 -0.1
Flamengo 0 Coritiba 0 +0.1
Santos 5 Gremio 1 +0.0
Week of 12/11100.0*Serie B100.0*Average seed
Paysandu 4 Guarani 2 Yes
-0.8
Palmeiras 3 Criciuma 2 -1.5
+0.1
Gremio 0 Atletico-MG 1 +1.3
-0.2
Cruzeiro 4 Vitoria 0 +0.1
Week of 12/19100.0*Serie B100.0*Average seed
Guarani 2 Gremio 0 +0.3
Vitoria 1 Ponte Preta 2 +0.2
Points
Chance Will Win Championship