How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Tuesday, 5/25100.0*Chance in playoffs100.0*Average seed
Clayton 5 de Sousa 8 +17.3
+0.8
Wright 8 Van den Bergh 5 +6.1
+0.1
Anderson 4 van Gerwen 8 -0.1
-0.1
Wednesday, 5/26100.0*Chance in playoffs100.0*Average seed
de Sousa 6 van Gerwen 8 -1.9
-0.7
Clayton 5 Wright 8 In
+0.1
Wade 7 Van den Bergh 7 +0.2
+0.0
Anderson 7 Aspinall 7 +0.0
Thursday, 5/27100.0*Chance in playoffs100.0*Average seed
Aspinall 3 de Sousa 8 +0.7
Van den Bergh 6 Clayton 8 -0.1
Games Above .500
Chance Will Make Playoffs