Year

Year 2020 is 25.1% complete.
25.101206246777714%

Month

Month 2020-4 is 2.9% complete.
2.9013743126048244%

Day

Day 2020-4-1 is 87.04% complete.
87.04220323033128%

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

For example