How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Libertadores100.0*Average seed
Atletico-MG 1 Bahia 0 +20.1
+0.5
Internacional 1 Atletico-MG 2 +18.1
+0.3
Atletico-PR 1 Corinthians 0 -13.3
-0.2
Vitoria 1 Atletico-PR 2 -6.2
-0.1
Sao Paulo 1 Cruzeiro 0 +5.9
+0.1
Cruzeiro 3 Vitoria 0 -4.9
-0.1
America-MG 2 Santos 1 +1.3
+0.0
Santos 1 Botafogo 1 +0.9
Botafogo 1 Internacional 0 -0.3
Gremio 2 Chapecoense 0 -0.1
Week of 11/25100.0*Libertadores100.0*Average seed
Atletico-PR 2 Ceara 2 +11.1
+0.1
Cruzeiro 0 Flamengo 2 +4.6
+0.1
Week of 12/1100.0*Libertadores100.0*Average seed
Flamengo 1 Atletico-PR 2 -38.6
-0.4
Atletico-MG 1 Botafogo 0 Yes
+0.2
Points
Chance Will Win Championship