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
Wade 7 Lewis 4 -20.9
-0.9
Lewis 0 van Gerwen 7 -12.3
-0.5
Taylor 3 Wright 7 +5.0
+0.1
Anderson 7 van Barneveld 4 -0.7
Chisnall 6 van Gerwen 6 -0.1
-0.0
Week of 5/4100.0*Chance in playoffs100.0*Average seed
Wright 7 Lewis 2 -7.7
-0.5
van Gerwen 3 Taylor 7 -4.6
-0.1
van Barneveld 5 Chisnall 7 +0.8
-0.0
Wade 3 Anderson 7 -0.4
+0.2
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Taylor 7 Lewis 5 -0.4
Wright 7 van Barneveld 1 +0.1
Chisnall 6 Wade 6 -0.0
Games Above .500
Chance Will Make Playoffs