Year

Year 2019 is 64.31% complete.
64.3199631770095%

Month

Month 2019-8 is 73.44% complete.
73.4447311361034%

Day

Day 2019-8-23 is 76.78% complete.
76.78670389944567%

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

For example