Year

Year 2019 is 79.5% complete.
79.50862593686992%

Month

Month 2019-10 is 55.5% complete.
55.50478029468492%

Day

Day 2019-10-18 is 20.64% complete.
20.64778569779502%

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

For example