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
Martinique 2 Nicaragua 0 +24.6
+2.2
United States 3 Martinique 2 -10.7
-2.6
El Salvador 2 Curacao 0 -4.8
-0.1
Mexico 0 Jamaica 0 -1.4
Honduras 0 Costa Rica 1 -0.1
French Guyana 2 Canada 4 -0.1
Panama 2 Nicaragua 1 +0.1
-0.2
United States 1 Panama 1 +0.1
Week of 7/14100.0*Chance in playoffs100.0*Average seed
Panama 3 Martinique 0 -35.6
-1.8
Jamaica 1 El Salvador 1 Out
-0.2
Nicaragua 0 United States 3 +1.6
+0.1
Canada 0 Honduras 0 -1.3
-0.1
Curacao 0 Mexico 2 +0.3
Costa Rica 3 French Guyana 0 -0.1
Points
Chance Will Make Playoffs