How are these numbers calculated?

Big Games

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

Week of 3/10100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
Wales 22 Ireland 9 -13.2
+0.1
Week of 3/11100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
Italy 18 France 40 +9.1
No
+0.3
England 61 Scotland 21 +0.2
+0.0
Week of 3/18100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
France 10 Wales 18 -53.2
-1.8
Ireland 13 England 9 -5.1
-0.5
Scotland 29 Italy 0 -1.7
-0.0
Games Above .500
Chance Will Make Playoffs