Gross Margin Percentage, or GMP for short, is a metric used to measure the profitability of a business. It’s typically calculated as the difference between the sales price and cost of goods sold (COGS), divided by the total revenue. In other words, it’s the percentage of sales that contributes to a company’s profits after accounting for expenses related to production. GMP is an essential tool for any organization looking to maximize their bottom line, as it offers an accurate look into how well their products are selling and what areas could be improved upon. So make sure you keep an eye on your GMP – it could make all the difference in the success of your business!