Percentages suck. They feel almost designed to confuse. Just about anything is better, really. Doesn't help that people using percentages either use them intentionally to confuse their victims - think shop owners, advertisers, banks, scammers, especially in finance and insurance adjacent areas - or just don't realize how easy it is for everyone, including them themselves, to lost track of the base/referent.
I've come to see the use of percentages as a warning sign.