Thanks to OpenTable for providing this restaurant data:
This data shows the year-over-year change in diners as tabulated by OpenTable for the US, the states of Washington and New York, and a few impacted cities (Seattle, San Francisco, and Boston).
This data is updated through March 17, 2020.
The US was off 84% YoY as of yesterday.
As of yesterday, San Francisco was off 100% YoY, Boston was off 100% YoY, and Seattle was off 100%. Going forward, restaurants are closing in many states (except take out and pick up)
As of March 17th, 13 states and D.C. were off 100%, Soon it will be all states.
Clearly the US will need to help the employees (and owners) of these impacted sectors.