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
El Salvador 2 Curacao 0 -31.6
-2.2
Mexico 0 Jamaica 0 -2.3
-0.1
United States 3 Martinique 2 -2.0
-0.1
Panama 2 Nicaragua 1 -1.2
United States 1 Panama 1 +0.3
Honduras 0 Costa Rica 1 -0.1
French Guyana 2 Canada 4 -0.1
Martinique 2 Nicaragua 0 -0.1
Week of 7/14100.0*Chance in playoffs100.0*Average seed
Curacao 0 Mexico 2 Out
-0.7
Jamaica 1 El Salvador 1 Out
-0.2
Panama 3 Martinique 0 +3.3
+0.1
Canada 0 Honduras 0 -1.3
Nicaragua 0 United States 3 +1.2
+0.3
Costa Rica 3 French Guyana 0 +0.1
+0.3
Points
Chance Will Make Playoffs