I go with (HW*100)/A
HW error % = HW/A+R+HW
where
HW = number of hw errors
A = number of accepted
R = number of rejected
with 0.97 I got something like 10-11% after almost 20 hours, whereas before the same miner running with 0.95 I used to have 5-7%
Thanks. That changes mine from ~4.4% down to ~4.1%. Although it doesn't agree with BertMod:
Device Hardware%=4.9875
Device Rejected%=4.1048
Pool Rejected%=4.3372
Pool Stale%=0.0000
I use this formula because kano say so ;P don't remember where thou. Now i'm on my way home but as soon as i get there i'll search the link of the post where he explained how to compute varoius ratios.