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
Switzerland 5 Belgium 2 In
Yes
+2.7
Portugal 1 Poland 1 +0.1
Italy 0 Portugal 0 +0.1
England 2 Croatia 1 -0.1
Germany 2 Netherlands 2 -0.0
Points
Chance Will Make Playoffs