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*Average seed
Portugal 1 Poland 1 -0.2
Italy 0 Portugal 0 -0.2
England 2 Croatia 1 +0.1
Germany 2 Netherlands 2 +0.0
Points
Chance Will Make Playoffs