Year

Year 2019 is 79.5% complete.
79.50493870900694%

Month

Month 2019-10 is 55.46% complete.
55.46136614533681%

Day

Day 2019-10-18 is 19.3% complete.
19.301931993471715%

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

For example