Continuous Days on Market (CDOM) means the total number of days that a home has been active in the MLS. The only way to reset a home's CDOM count is to remove it from the market for at least 90 days.
Selling price is the final price for which a home sold, as reported to the MLS following closing.
Original listing price is the price for which a home was originally listed, as opposed to the final price for which it was listed, which is simply referred to as the listing price. The two numbers will be different if the seller reduced the price of the home before it sold.
SP/Orig LP % is the selling price as a percentage of the original listing price. A 98, for example, means that the selling price was 98% of the home's original listing price.