Year

Year 2020 is 24.63% complete.
24.631303260581056%

Month

Month 2020-3 is 97.25% complete.
97.25993012844431%

Day

Day 2020-3-31 is 15.05% complete.
15.056882557611607%

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

For example