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
Lewis 4 Wade 7 +1.5
Wright 7 Taylor 3 +1.2
+0.1
vanGerwen 7 Lewis 0 +0.8
+0.1
vanBarneveld 4 Anderson 7 -0.8
vanGerwen 6 Chisnall 6 +0.5
+0.2
If winner is:HomeDrawAway
Week of 5/4100.0*Chance in playoffs100.0*Average seed
Chisnall vs vanBarneveld+17.3-6.6Out
+1.0-0.1-0.9
Taylor vs vanGerwen-7.1-2.8+3.9
-0.1-0.1+0.1
Lewis vs Wright-3.4+0.1+1.6
-0.3-0.1+0.2
Anderson vs Wade-1.5-1.1+3.2
+0.1-0.0-0.1

What If

Chances based on how well the Chisnall finish out the regular season.   Explain

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs12345678910RelegatedCount
172-0-059.8%1050401No7,803,397,883
161-1-014.801455282No8,814,358,844
151-0-10.511354303No15,689,815,057
0-2-00.20955324No2,483,902,080
140-1-1Out164737No8,810,195,589
130-0-2Out1288No7,796,099,227
Total:11.8%21020272121No51,397,768,680
Games Above .500
Chance Will Make Playoffs