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 -27.0
-1.0
Lewis 0 van Gerwen 7 +4.3
+0.2
Wade 7 Lewis 4 +4.1
+0.1
Taylor 3 Wright 7 +3.3
+0.1
Chisnall 6 van Gerwen 6 +0.6
+0.0
Week of 5/4100.0*Chance in playoffs100.0*Average seed
van Barneveld 5 Chisnall 7 -24.9
-1.1
van Gerwen 3 Taylor 7 -9.7
-0.2
Wright 7 Lewis 2 +3.8
+0.2
Wade 3 Anderson 7 -3.0
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Wright 7 van Barneveld 1 -0.7
Taylor 7 Lewis 5 +0.2
Chisnall 6 Wade 6 +0.2
Games Above .500
Chance Will Make Playoffs