Year

Year 2020 is 4.75% complete.
4.753967101657869%

Month

Month 2020-1 is 56.12% complete.
56.12750173573791%

Day

Day 2020-1-18 is 39.95% complete.
39.952366595662916%

This site Dividing the year, month, day into 100 pieces and show the progress bar for you.

For example