Year

Year 2019 is 64.3% complete.
64.30922586531962%

Month

Month 2019-8 is 73.31% complete.
73.31830790688524%

Day

Day 2019-8-23 is 72.86% complete.
72.86753989622012%

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

For example