guard leaves? Fan leaves? The more trichs there are the more hash you'll get.
the method used will also offer a different yield. Bubble bags? Sifting? How are you approaching this process?
In GENERAL....if you have some very crystallized guard and popcorn buds you can expect between 5% and 10% of kif weight from your 100 grams of trimmings. Again though..this will depend on what you use to get at the trichs...etc and how frosty yer trim is. If all you have is FAN leaves..you'll get very little.
good luck
bt dt