Year

Year 2019 is 95.4% complete.
95.40935681214349%

Month

Month 2019-12 is 45.94% complete.
45.94886012815872%

Day

Day 2019-12-15 is 24.41% complete.
24.41441473165421%

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

For example