How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Libertadores100.0*Average seed
Corinthians 1 Gremio 0 -22.8
-0.7
Internacional 2 Atletico-MG 1 -1.7
-0.1
Sport Recife 2 Fluminense 2 +0.4
+0.1
Santos 0 Sao Paulo 1 -0.3
Week of 11/29100.0*Libertadores100.0*Average seed
Internacional 3 Palmeiras 1 -4.7
-0.1
Fluminense 5 Corinthians 2 +1.9
-0.2
Bahia 1 Gremio 0 No
-0.4
Atletico-MG 1 Coritiba 2 +0.4
+0.3
Week of 12/6100.0*Libertadores100.0*Average seed
Gremio 1 Flamengo 1 -0.4
Botafogo 0 Atletico-MG 0 +0.2
Cruzeiro 2 Fluminense 1 +0.1
Points
Chance Will Win Championship