How are these numbers calculated?

Big Games

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

Week of 7/7100.0*Chance in playoffs100.0*Average seed
French Guyana 2 Canada 4 -23.9
-2.1
Mexico 0 Jamaica 0 -0.5
United States 3 Martinique 2 -0.3
-0.0
United States 1 Panama 1 +0.3
El Salvador 2 Curacao 0 -0.2
+0.0
Panama 2 Nicaragua 1 -0.2
+0.1
Martinique 2 Nicaragua 0 -0.1
Honduras 0 Costa Rica 1 -0.0
Week of 7/14100.0*Chance in playoffs100.0*Average seed
Costa Rica 3 French Guyana 0 Out
-0.7
Curacao 0 Mexico 2 +0.2
Nicaragua 0 United States 3 +0.1
Points
Chance Will Make Playoffs