I'm glad you raised the query Eva because I just checked and realised the "=SUM(Range)" on the spreadsheet was wrong, I had left it on an old setting. So the POS was 299%
54 bets @ $100 = $5400
Profit for the day based on $100 liability = $299
POT is $299 divided by $5400 = 5.5%

Thanks for that........RP