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
Flamengo 2 Atletico-PR 0 -5.3
-0.2
America-RN 0 Gremio 3 +4.7
+0.5
Internacional 2 Palmeiras 1 +3.8
+0.2
Sport Recife 1 Cruzeiro 0 +3.4
+0.1
Fluminense 3 Juventude 2 -1.4
-0.2
Parana 2 Santos 3 -1.4
-0.1
Sao Paulo 2 Botafogo 2 +0.0
Week of 12/2100.0*Libertadores100.0*Average seed
Santos 2 Fluminense 4 No
-0.4
Cruzeiro 2 America-RN 0 -7.6
-0.2
Gremio 1 Corinthians 1 -6.2
-0.1
Palmeiras 1 Atletico-MG 3 +5.8
+0.4
Points
Chance Will Win Championship