Sorry I have no formule handy, but, page 4.165 of "The American Electricians Handbook" has a chart that, if I am using it correctly, shows that your uncorrected P.F. is indeed around 86%(actually,the chart indicates 88%).
BTW,
how did you get your wattage to divide by VA?

[This message has been edited by Redsy (edited 06-27-2001).]

[This message has been edited by Redsy (edited 06-27-2001).]