Year

Year 2019 is 79.5% complete.
79.50450065522543%

Month

Month 2019-10 is 55.45% complete.
55.456208413566664%

Day

Day 2019-10-18 is 19.14% complete.
19.142040517697488%

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

For example