Percentage value of number of death and recovered.

Created by: i341766

Is your feature request related to a problem? Please describe. As a user I would like to know what percentage of people have recovered and percentage of the total cases led to death.

Describe the solution you'd like A very simple percentage value. For example RecoveryRatePercentage = TotalRecovery * 100/TotalCases TotalDeathsPercentage = TotalDeaths * 100/TotalCaese

Describe alternatives you've considered NA

Additional context It is good metric to understand how are we processing with the COVID-19 fight. People are able to relate with percentage more easily than the big numbers. We can also add a graph of percentage value, how it changed with time.