Sometimes a radio program is added to the carrier in such a way that the program signal causes fluctuations in the carrier's frequency. This is called frequency modulation (FM). Another way of sending a radio signal is to make the peaks of the carrier wave bigger or smaller.
Calculating the percentage profit made. It is also possible to work out the percentage profit that is made on a deal. This is done using the profit and the price that something cost originally, before it was sold on (the Cost Price). Percentage Profit = (profit/cost price) x 100%. The next example shows how this is done. Example.
Calculating Markup Percentage. Markup percentage is equal to gross profit margin divided by the unit cost. Gross profit is equal to unit sales minus the cost of the product. For example, consider a company that purchases a product for $10 and resells the product to customers for $15. The gross profit is $5, the unit cost is $10, and the markup percentage on the product is 50 percent.