However Lojban translates English "100% of" ought to correspond to Lojban ro. "0% of", "more than 0%", "50% of", "99% of", "100% of" should behave alike with regard to importingness.
"0%", "(more than 0)%", "50%", "99%", "100%" should all be nonimporting. Any percentage of zero is zero.
"more than (0%)" should be importing. 0% is zero, and more than that is more than zero.