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*Libertadores100.0*Average seed
Goias 4 Bahia 3 +3.8
+0.9
Fortaleza 2 Santos 1 -1.0
-0.2
Botafogo 1 Corinthians 0 +0.8
-0.1
Internacional 2 Fortaleza 2 +0.7
+0.0
Sao Paulo 1 Vasco da Gama 0 +0.2
+0.1
Atletico-MG 0 Athletico-PR 1 +0.1
Week of 12/1100.0*Libertadores100.0*Average seed
Goias 1 Fortaleza 2 -11.1
-0.7
Atletico-MG 2 Corinthians 1 +4.5
Palmeiras 5 Goias 1 No
-0.5
Ceara 0 Corinthians 1 -2.0
Sao Paulo 2 Internacional 1 +1.7
Fluminense 0 Fortaleza 0 +0.4
+0.0
Gremio 3 Sao Paulo 0 +0.1
CSA 1 Bahia 2 -0.1
-0.1
Bahia 1 Vasco da Gama 1 +0.2
Vasco da Gama 1 Cruzeiro 0 -0.1
Atletico-MG 2 Botafogo 0 -0.1
Week of 12/8100.0*Libertadores100.0*Average seed
Goias 3 Gremio 2 +1.4
Vasco da Gama 1 Chapecoense 1 +0.4
Internacional 2 Atletico-MG 1 +0.2
Fortaleza 2 Bahia 1 +0.2
Points
Chance Will Win Championship