In column A are dates (in order, from 1986 to the present). In column B are a range of values, so each day has a corresponding value. Using the first x days of column B values as my sample (for example, 50 days), I need to calculate a value such that a given percentage of the sample values (say, 15%) are greater than that value and the rest are below that value.
Windows Explorer let you handle zip folders nearly as any other folder: Copy, move, change, and delete, etc.
In VBA you can also handle normal files and folders, but zip folders takes a little more - and that you'll find here.