How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Serie B100.0*Average seed
Cruzeiro 1 Atletico-PR 1 +10.6
-0.2
Gremio 1 Ceara 3 +4.5
-0.2
Bahia 0 Palmeiras 2 -1.0
Corinthians 2 Atletico-MG 1 -0.7
Sao Paulo 3 America-MG 1 -0.3
+0.1
Atletico-GO 0 Flamengo 0 +0.1
Week of 11/27100.0*Serie B100.0*Average seed
America-MG 2 Atletico-PR 1 +14.7
-0.7
Ceara 2 Cruzeiro 2 -9.4
+0.1
Santos 1 Bahia 1 +0.7
Atletico-MG 4 Botafogo 0 +0.6
Week of 12/4100.0*Serie B100.0*Average seed
Atletico-PR 1 Coritiba 0 -20.8
+1.0
Cruzeiro 6 Atletico-MG 1 Yes
-0.1
Bahia 2 Ceara 1 -3.5
+0.1
Atletico-GO 5 America-MG 1 +0.2
Points
Chance Will Win Championship