How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Pirae 4 Auckland City 11 -0.4
-0.4
-0.0
If winner is:HomeDrawAway
Tefana vs Tafea+15.0-6.0-28.0
+15.0-6.0-28.0
+0.9-0.3-1.7
Tefana vs Hekari United+15.0-6.1-28.0
+15.0-6.1-28.0
+0.9-0.3-1.7
Ba vs Gaïtcha-1.3+2.7+4.0
-1.3+2.7+4.0
-0.0+0.1+0.1
Western United vs Amicale-1.2+1.9+1.3
-1.2+1.9+1.3
-0.1+0.1+0.2
Tafea vs Team Wellington-1.2+1.8+1.3
-1.2+1.8+1.3
-0.1+0.1+0.1
Hekari United vs Team Wellington-1.2+1.7+1.3
-1.2+1.7+1.3
-0.1+0.1+0.1
Tafea vs Hekari United-0.3+1.2-0.3
-0.3+1.2-0.3
Auckland City vs Western United-0.8+0.5+0.4
-0.8+0.5+0.4
-0.0+0.1-0.0
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Ba vs Pirae-0.4+5.1-2.3
-0.4+5.1-2.3
-0.0+0.1-0.0
Amicale vs Auckland City+2.1+2.5-2.0
+2.1+2.5-2.0
+0.1+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
92-0-0InYes76245,533,251
71-1-0InYes3558703,761,969
61-0-189.2%89.2%32337261015,114,968
50-2-076.076.0062743240641,530
40-1-124.824.8042144283001,741,138
30-0-20.50.5006343719401,186,544
Total:82.2%82.2%3226131185310017,979,400
Points
Chance Will Make Playoffs