The general issue with this measure of mortality (dead/(infected + dead)) is that you're assuming that the infected won't die. In a disease that is exponentially growing, a better approximation of evaluating your survival chances is to look at the death to recovery rate (dead / (recovered + dead)). Based on the available data [1], we are closer to 7.8% than 2% mortality, which is closer to the final mortality rate of SARS of 9.6% [2].
Nevertheless, I think all these statistics need to be taken with a grain of salt - I doubt that the numbers we are seeing are of very high quality, given the political and cultural pressures in China to underreport, the lack of test kits, corona virus deaths being attributed to other diseases, ... On the flip side, it's very likely that mild cases will never be reported, which in turn would decrease the mortality rate.
[1] https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.h...
[2] https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndr...
[edit: corrected the formula - thank you @anhner and @11thEarlOfMar for spotting the mistake]
[edit: indicated that there's also a chance of under-reporting mild cases - my edit coincided with @Tenoke's post - sorry for noticing this late @Tenoke]