Change Table Structure

[Eves123]

Hi,

I'm trying to change my current table structure into a new Table with different columns and I'm wondering if there is any fast way of doing this rather than manually updating each field. (there are over 200 rows to update).

So a little background.
My current Table contains all the Purchase orders against each Customer in the following table structure:

Table Headers: Company ; Date ; Order No; Product1; Product2; Product 3; Product 4;
Row 2 Input data: CompABC; 2/2/15; 2222; 1; 2; 0; 0
Row 3 Input data; CompanyD: 3/4/15; 2212; 0; 0; 1; 0

Basically under each Product Column, if an order is placed from that customer, the qty is placed in that product column. Which as the products increased and the orders increased, its quite hard to keep track.
The New table I've created will remove all the products column, and only 1 product column that is in the list format. and I just select the product in the dropdown list. And I created another qty column against the products similar to below:

New Table header: Company; Date; Order No; Product; Qty;

I'm wondering if there are any codes or formulas to help me do this quickly?

Many Thanks.