8 out of 1073 = 1.34125% as of 20.02.2019 [1], looks like it rises 1% per day;p but we both know that it's false assumption. And numbers we have right now doesn't matter really because it is too early to tell. Half of the world doesn't even have a capacity to test for COVID-19. And impact on developing countries will be on completely different level [2] (or maybe not, because population is much younger there)
[1] https://www.who.int/docs/default-source/coronaviruse/situati... [2] https://www.who.int/news-room/fact-sheets/detail/the-top-10-...