Year

Year 2019 is 71.86% complete.
71.86709711393925%

Month

Month 2019-9 is 64.38% complete.
64.38301199888234%

Day

Day 2019-9-20 is 31.48% complete.
31.48997926007258%

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

For example