According to https://www.worldometers.info, where I often go for data on COVID-19 cases, the population of Earth surpassed 7,777,777,777 today. Unfortunately, I didn’t catch it right as the counter turned, but for randomly checking I think I got pretty close at only 2,229 off. That is definitely within the measurement error, especially given that we are in the middle of a deadly COVID-19 pandemic.
According to https://ourworldindata.org/births-and-deaths, 140.66 million humans will be born on Earth and 60.20 million humans will die during 2020. As a second reference, https://www.wolframalpha.com gives 141 million births and 58 million deaths.
I don’t believe either of these have taken into account the additional deaths due to the COVID-19 pandemic. There have been 137,108 official COVID-19 deaths according to https://coronavirus.jhu.edu/map.html.
Since not all deaths are counted and since we are in the middle of the first of an unknown number of waves this year, then I’m going to assume that deaths-to-date is 10% of the total for the year. Let’s say 1,371,080. Taking the average of 60.2 and 58 million gives us a 59.1 million original death estimate, which is 0.7599% mortality rate for today’s population of 7,777,777,777. Adding 1,371,080 deaths to 59.1 million, the expected number of deaths during 2020 is 60,437,080 which increases the mortality rate to 0.7770%.