How are these numbers calculated?

Big Games

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

Week of 4/27100.0*Chance in playoffs100.0*Average seed
Anderson 7 van Barneveld 4 +29.1
+1.0
Lewis 0 van Gerwen 7 +4.6
+0.2
Wade 7 Lewis 4 +4.3
+0.1
Taylor 3 Wright 7 +3.7
+0.1
Chisnall 6 van Gerwen 6 +0.7
+0.0
Week of 5/4100.0*Chance in playoffs100.0*Average seed
Wade 3 Anderson 7 +12.7
+0.5
van Gerwen 3 Taylor 7 -3.9
-0.2
Wright 7 Lewis 2 +1.7
van Barneveld 5 Chisnall 7 +1.5
+0.0
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Taylor 7 Lewis 5 -0.2
van Gerwen 7 Anderson 4 -0.2
Games Above .500
Chance Will Make Playoffs