How are these numbers calculated?

Big Games

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

Week of 7/13100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
United States 3 Martinique 2 -18.9
-18.9
-2.2
Panama 2 Nicaragua 1 +1.5
+1.5
-0.1
Honduras 0 French Guyana 0 +1.1
+1.1
+0.1
Costa Rica 1 Canada 1 -0.7
-0.7
+0.1
Mexico 0 Jamaica 0 -0.7
-0.7
+0.1
El Salvador 2 Curaçao 0 -0.4
-0.4
-0.0
Week of 7/16100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Panama 3 Martinique 0 -38.7
-38.7
-2.8
Nicaragua 0 United States 3 +5.1
+5.1
-0.4
Canada 0 Honduras 0 +5.0
+5.0
+0.1
Costa Rica 3 French Guyana 0 +5.0
+5.0
-0.1
Jamaica 1 El Salvador 1 -3.7
-3.7
Curaçao 0 Mexico 2 +0.7
+0.7
-0.1
Points
Chance Will Make Playoffs