Year

Year 2019 is 64.3% complete.
64.30919567926453%

Month

Month 2019-8 is 73.31% complete.
73.31795249030878%

Day

Day 2019-8-23 is 72.85% complete.
72.85652185894014%

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

For example