OK, I worked it out at approx 97%!! But don't quote me if you want to enter any Crabbet classesThere are some experts connected with their organisation who would do this far more accurately.
I breed Quarabs, all of mine have turned out like slightly stocky arabians with very pretty heads but a less dramatic temperament than their dam.
What's the breeding of your arab x ? (Pedigree junkie here, sorry) If he is the Paint in the photo he's part APHA not QH,(Not that there is a difference in anything but the Breed Registry Name)
Enfys,Please contact me as the horse you rode,Bankara is my 26 year old who is still going strong.What a coincidence.