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
Costa Rica 1 Canada 1 +1.7
+1.7
-0.6
Panama 2 Nicaragua 1 -0.4
-0.4
-0.0
United States 3 Martinique 2 -0.4
-0.4
+0.0
El Salvador 2 Curaçao 0 -0.3
-0.3
Mexico 0 Jamaica 0 -0.1
-0.1
+0.1
Honduras 0 French Guyana 0 +0.1
+0.1
+0.1
Week of 7/16100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Costa Rica 3 French Guyana 0 In
Yes
+1.1
Jamaica 1 El Salvador 1 -1.8
-1.8
+0.1
Canada 0 Honduras 0 +1.3
+1.3
+0.3
Panama 3 Martinique 0 +0.9
+0.9
-0.1
Nicaragua 0 United States 3 -0.1
Curaçao 0 Mexico 2 -0.1
Points
Chance Will Make Playoffs