Year

Year 2019 is 95.4% complete.
95.40998847941677%

Month

Month 2019-12 is 45.95% complete.
45.956297503433355%

Day

Day 2019-12-15 is 24.64% complete.
24.644975947619578%

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

For example