[whatok]

In a lot of cases, reporters do not have access to AUM or want to extrapolate from potentially misleading sources in order to construct a percentage return that does not exist publicly. You don't see reporters attempt to extrapolate dollar returns from percentage ones when percentage ones are all that are available; even if dollar returns might make a better headline like you claim. A headline with an extrapolated percentage return would have to be phrased in an awkward manner like "could be down as much as" and an editor is not going to greenlight that. This isn't even broaching the subject of gross vs net percentage returns which isn't possible to succinctly address in a mere headline.