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
Fluminense 3 Juventude 2 +17.7
+1.2
Parana 2 Santos 3 -9.1
-0.2
Sport Recife 1 Cruzeiro 0 +5.9
+0.3
Flamengo 2 Atletico-PR 0 -5.5
-0.2
Internacional 2 Palmeiras 1 +4.1
+0.1
America-RN 0 Gremio 3 -0.4
-0.2
Sao Paulo 2 Botafogo 2 +0.2
+0.1
Week of 12/2100.0*Libertadores100.0*Average seed
Santos 2 Fluminense 4 +36.9
+1.0
Palmeiras 1 Atletico-MG 3 +20.3
+0.3
Cruzeiro 2 America-RN 0 -4.1
-0.3
Gremio 1 Corinthians 1 +2.3
-0.0
Points
Chance Will Win Championship