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
Panama 2 Nicaragua 1 -30.3
-2.1
Martinique 2 Nicaragua 0 -24.1
-2.1
United States 3 Martinique 2 -2.3
-0.1
Mexico 0 Jamaica 0 -1.1
El Salvador 2 Curacao 0 -0.3
+0.0
French Guyana 2 Canada 4 -0.1
Honduras 0 Costa Rica 1 -0.1
United States 1 Panama 1 +0.1
Week of 7/14100.0*Chance in playoffs100.0*Average seed
Nicaragua 0 United States 3 Out
-0.9
Panama 3 Martinique 0 +5.0
+0.2
Canada 0 Honduras 0 -1.5
Costa Rica 3 French Guyana 0 +0.1
+0.3
Curacao 0 Mexico 2 +0.4
Points
Chance Will Make Playoffs