How are these numbers calculated?

Big Games

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

Week of 10/7100.0*Chance in playoffs100.0*Direct qualify100.0*Average seed
Andorra 0 Portugal 2 +10.5
+5.2
+1.0
Switzerland 5 Hungary 2 -6.5
-3.3
-0.4
Bosnia-Herzegov 3 Belgium 4 -0.2
Spain 3 Albania 0 -0.1
Italy 1 Macedonia 1 +0.1
Week of 10/10100.0*Chance in playoffs100.0*Direct qualify100.0*Average seed
Portugal 2 Switzerland 0 In
Yes
+2.9
Israel 0 Spain 1 -0.2
Belgium 4 Cyprus 0 -0.2
Points
Chance Will Make Playoffs