How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Chance in playoffs100.0*Average seed
Wright 1 Smith 7 Out
-0.3
Smith 1 van Gerwen 7 +0.1
Whitlock 7 Anderson 5 -0.2
van Barneveld 6 Cross 6 -0.1
Gurney 6 van Gerwen 6 -0.0
Week of 5/3100.0*Chance in playoffs100.0*Average seed
Wright 7 Whitlock 4 +0.7
Anderson 3 van Barneveld 7 -0.1
Gurney 6 Smith 6 -0.1
Week of 5/10100.0*Chance in playoffs100.0*Average seed
Whitlock 6 Cross 6 -0.2
Wright 6 Gurney 6 -0.1
Games Above .500
Chance Will Make Playoffs