That is growth rate as measured by confirmed cases. However given various restrictions on availability of testing, confirmed cases and real cases are likely to tell very different stories. Given that most countries refuse to test, refuse to test, hit an "oh shit moment" and start ramping up, the confirmed rate that your link uses measures testing more than actual infection rates.

References such as https://www.imperial.ac.uk/media/imperial-college/medicine/s... have used a doubling time of about 5 days. As https://www.statnews.com/2020/03/10/simple-math-alarming-ans... points out, studies of what happened in Wuhan suggest a real doubling time of about 6 days.

There are admittedly a lot of question marks about everyone's numbers.

New York's growth rate is going to look terrifyingly high as testing capability ramps up significantly.

It is ramping up significantly, with a corresponding growth rate of confirmed cases. 4 days ago it was approaching 1000. It will probably be 10,000 by tomorrow.

There has been a steady drumbeat of warnings to expect that spike, but unfortunately the statistical nuances of epidemiology will be lost on many.