Year

Year 2019 is 95.4% complete.
95.4098392498364%

Month

Month 2019-12 is 45.95% complete.
45.954540444870716%

Day

Day 2019-12-15 is 24.59% complete.
24.590506522081153%

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

For example