Product comparison table

Purpose of project is to build a plugin that will allow website users to select and display specific columns from a large data table. Input Excel table: Each column of input table contains (A) a title column which names data on the row and (B) one column for each of three most recent years for each product as follows (1) name of product, (2) fiscal year covered by data, (3) terminal month of fiscal year, (4) list of approximately 40 dollar amounts. Input matrix contains three years of data for each product. Input table is being developed and will grow to about 300 columns. Website manager will update data for each product annually by adding data for newest year and dropping data for oldest year. Website manager can also add new products. Output: User of website can select up to any of six columns from input database to be displayed in a comparison table. The output table will contain absolute dollar amounts and easily calculated percentages. The output table may be printed or saved by the user. Website uses WordPress and WooCommerce