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
Parana 2 Santos 3 +18.7
+0.8
Flamengo 2 Atletico-PR 0 -4.0
-0.2
Fluminense 3 Juventude 2 -3.9
-0.1
Internacional 2 Palmeiras 1 +3.3
+0.2
Sport Recife 1 Cruzeiro 0 +2.9
+0.2
America-RN 0 Gremio 3 -0.8
Week of 12/2100.0*Libertadores100.0*Average seed
Nautico 1 Flamengo 0 +0.3
Santos 2 Fluminense 4 -0.2
Points
Chance Will Win Championship