Add multiple percentages to a starting figure by pulling stats from mysql.

[JamieWarren09]

Hi all,

If I have the following


$startingfigure = "20,000";
$startdate = "2016-02-01";


and then in my database I have the following :




How can I make it add / subtract the percentages from the starting figure, but only add / subtract the percentages on any dates after the start date?

As everybody will have a different start date.


Any help would be appreciated.

Regards,
Jamie