How are these numbers calculated?

Big Games

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

Week of 10/5100.0*Chance in playoffs100.0*Qualified100.0*Average seed
United States 4 Panama 0 +39.0
+24.2
+0.5
Costa Rica 1 Honduras 1 -0.4
-0.3
Week of 10/9100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Trinidad and T 2 United States 1 -29.3
-16.1
-0.3
Panama 2 Costa Rica 1 -12.8
-7.1
-0.1
Honduras 3 Mexico 2 -10.5
-6.9
-0.1
Points
Chance Will Make Playoffs