How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Chance in playoffs100.0*Promotion100.0*Average seed
Scotland 3 Israel 2 In
Yes
+2.8
Albania 0 Scotland 4 +22.9
+22.9
+2.7
Serbia 4 Lithuania 1 -0.2
Greece 0 Estonia 1 +0.1
Hungary 2 Finland 0 +0.1
Romania 3 Lithuania 0 -0.1
Serbia 2 Montenegro 1 -0.1
Cyprus 0 Norway 2 -0.0
Bulgaria 1 Slovenia 1 -0.0
Points
Chance Will Make Playoffs