Good luck finding that out from the manufacturer, if that's what you were going to try to do. If my search found the correct company information, Holsum Foods merged with Ventura Foods and I can't find the nutritional information for the palm shortening in question. Which is really surprising since it is a US company & nutritional information labeling is pretty clear here.
IF your Holsum includes a nutritional label listing saturated fats and unsaturated fat, and whether or not the product is hydrogenated, that would be VERY useful in determining approximate percentages.
See this link for some information for Saturated & UnSataturate fat profiles for palm fruit vs PKO:
What is the difference between Palm Fruit and Palm Kernal Oils? - Moms Meet
Here's a description of how to get an approximate percentage of how much of one oil and the other oil are in a mixed blend:
Tallow/canola oil mixed shortening -Sunspun brand In that case it is for another oil mix, but the concept is the same.
You can also look up the individual oils for saturated & unsaturated percentages and use that to help you figure out the different percentages.
PKO is 75:25
Hydrogenated PKO is 90:10
Palm Oil is 50:50
Palm Stearin is 67:33
If your label indicates one of those as the ratio of Saturated to Unsaturated, I might choose the corresponding one as my sole ingredient in the recipe in my Lye Calculator. That would give me a pretty accurate calculation for how much lye will be needed when input into the
lye calculator, But, since I know both oils are in the mix I would also try to figure out approximate percentages as
@Saponificarian spells out in order to get a better fatty acid profile for my soap formula when input into my
lye calculator.