Year

Year 2019 is 64.3% complete.
64.30914215846808%

Month

Month 2019-8 is 73.31% complete.
73.31732232587724%

Day

Day 2019-8-23 is 72.83% complete.
72.8369865427525%

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

For example