The current CDC "best estimate" is ~0.4%, assuming an R0 of 2.5, with estimates of ~0.2% if the R0 is actual ~2 in the US and ~1% if the R0 is actually 3.
Pretty sure that 0.4% is "among people who develop symptoms" and 35% of infections are asymptomatic. So 0.4% of 65% of infections, or ~0.26% of infections.