How are these numbers calculated?

Big Games

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

Week of 6/22100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Guyana 2 Panama 4 -6.8
-6.8
-0.8
United States 6 Trinidad and T 0 -1.0
-1.0
+0.1
Nicaragua 0 Haiti 2 +0.1
Costa Rica 2 Bermuda 1 +0.1
Week of 6/26100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Trinidad and T 1 Guyana 1 +0.2
Jamaica 1 Curaçao 1 -0.1
Honduras 4 El Salvador 0 -0.1
Martinique 2 Mexico 3 +0.1
Bermuda 2 Nicaragua 0 -0.1
Canada 7 Cuba 0 +0.1
Points
Chance Will Make Playoffs