How are these numbers calculated?

Big Games

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

Week of 6/14100.0*Chance in next round100.0*Average seed
Argentina 1 Iceland 1 -0.9
-0.0
Croatia 2 Nigeria 0 -0.3
Week of 6/21100.0*Chance in next round100.0*Average seed
Argentina 0 Croatia 3 -27.8
-0.7
Nigeria 2 Iceland 0 +11.6
+0.2
Week of 6/28None
Points
Chance Will Make Next Round