Is this posible?

Hello,
very nice work you have done with this plugin. Impressive!!

Can you please (or if anyone else knows) if this can be done:

I want to count down the percentage between 2 dates.
For example:
start date: 2016-08-16
end date: 2017-02-28
today: 2016-09-16

the counter should show how many procent there is still till the end date.

Start date: 100%
End Date: 0%

Thank you, Davor

https://www.ads-software.com/plugins/jellyfish-counter-widget/