How are these numbers calculated?

Big Games

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

Week of 3/27100.0*Chance in playoffs100.0*Qualify for EPCR Champions Cup100.0*Average seed
Leicester 25 Exeter 18 -12.4
-2.8
-0.4
Saracens 42 Harlequins 14 -1.8
+0.1
-0.0
Northampton 52 Wasps 30 +1.3
+0.4
+0.0
London Welsh 14 Bath 29 -1.0
-0.1
-0.0
Sale Sharks 23 Gloucester 6 -0.3
-1.5
-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedRelegated to
TPW-D-LplayoffsQualify for EPCR Champions Cup123456789101112RFU ChampionshipCount
604-0-0InYes067302No62,177,834
583-1-0100.0%Yes02260170No17,069,451
563-0-191.1Yes837459No345,710,551
2-2-089.1Yes6335011No1,698,917
542-1-168.6Yes0860310No66,849,804
1-3-076.8Yes0116523No72,076
522-0-223.299.9%012267100No642,322,627
1-2-121.899.901217080No4,139,999
0-4-015.7Yes1157113No1,133
501-1-26.996.700758313No76,926,567
0-3-15.392.10548398No81,283
481-0-30.171.300185329No462,255,555
0-2-20.173.100215227No2,176,062
460-1-30.036.2043264No24,756,907
440-0-4Out4.905923No99,776,186
Total:33.1%86.3%0410193419130No1,806,014,952
Games Above .500
Chance Will Make Playoffs