How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Serie B100.0*Average seed
CSA 0 Fluminense 1 -16.6
+0.7
Botafogo 1 Corinthians 0 +2.4
-0.2
Atletico-MG 0 Athletico-PR 1 -0.1
+0.0
Fluminense 1 Palmeiras 0 -8.5
+1.0
Cruzeiro 0 CSA 1 -4.4
+0.1
Ceara 1 Sao Paulo 1 +0.1
+0.0
Fortaleza 2 Santos 1 -0.1
Week of 12/1100.0*Serie B100.0*Average seed
Vasco da Gama 1 Cruzeiro 0 No
-0.1
Avai 1 Fluminense 1 -0.2
-0.5
CSA 1 Bahia 2 -0.1
Atletico-MG 2 Corinthians 1 -0.2
Atletico-MG 2 Botafogo 0 +0.1
Ceara 0 Corinthians 1 +0.1
Goias 1 Fortaleza 2 -0.1
Week of 12/8100.0*Serie B100.0*Average seed
Corinthians 1 Fluminense 2 +0.4
Botafogo 1 Ceara 1 -0.1
Points
Chance Will Win Championship