is that what you mean? You extracted, for example with 500, 250 and 100 ml for a total of around 850ml then recovered only 450? Dont worry about that too much, as you loose tons of dcm very easily having such a low boiling point.
It could also be, and most likely, that you still have a lot of dcm in your washes. Especially with water washes.
What you should do ic combine the 2 water washes, put them back in the sep and get more dcm out. Sep out, leave again. Sep out, leave again.
It's amazing how much dcm you can recover from those water layers. If you pour the 2 water washes togeter and you are patient, your yields will go up. I'm sure if you sep for 2 hours , you would still get some dcm, at least thats what happens when i use a 4L sep funnel.
How much PdCl2? Put more, I like 2.5 grams, gives higher yields, waste less safrole! Especially since PDCl2 prices have gone down last month