How are these numbers calculated?

Big Games

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

Week of 8/25100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Aspinall 5 Gurney 7 +7.3
-2.1
+0.5
Dobey [c] 2 Gurney 7 +4.7
-6.6
+0.4
Wright 7 de Zwaan [c] 1 -1.1
-0.1
Smith 7 Cross 3 -1.0
-2.1
-0.1
van Gerwen 7 Cross 2 -0.6
-6.3
Anderson 1 Price 7 +0.4
Aspinall 7 Price 4 -0.1
-0.1
Wright 6 Durrant 6 -0.1
Week of 8/27100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Wright 7 Gurney 4 -9.0
+0.2
-0.6
Smith 8 Gurney 3 -4.7
-0.5
Durrant 8 Gurney 3 -3.1
-0.4
Gurney 8 Wright 6 +2.1
+0.3
Wattimena [c] 0 Price 7 -1.1
-0.1
Durrant 7 Cross 4 -0.7
No
Gurney 6 Anderson 8 -0.5
-0.2
Durrant 8 Price 4 +0.5
+0.1
Wright 5 Anderson 8 -0.1
van Gerwen 4 Price 8 +0.1
-0.0
Wright 8 van Gerwen 1 +0.1
van Gerwen 8 Smith 5 -0.1
Aspinall 6 Anderson 8 +0.1
Anderson 7 Durrant 7 -0.1
Wright 6 Price 8 +0.1
Durrant 7 Smith 7 -0.0
Week of 9/4100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Gurney 5 Aspinall 8 -0.1
Smith 7 Price 7 -0.0
Games Above .500
Chance Will Make Playoffs