How are these numbers calculated?

Big Games

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

Week of 6/11100.0*Chance in next round100.0*Average seed
Argentina 1 Nigeria 0 +26.6
+0.7
Argentina 4 Korea Republic 1 +7.3
+0.6
Greece 2 Nigeria 1 -4.6
Korea Republic 2 Greece 0 -0.5
Week of 6/18100.0*Chance in next round100.0*Average seed
Greece 0 Argentina 2 In
+0.0
Nigeria 2 Korea Republic 2 In
Week of 6/25None
Points
Chance Will Make Next Round