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.
Managers typically use gross profit to compute gross profit margin, also known as gross margin. This is a ratio showing the efficiency in which the business turns revenue into gross profit. The formula is gross profit divided by revenue for the period. Using the same numbers, you divide $210,000 by $420,000 and get .50. You multiply this by 100 to convert it to a percentage of 50. This is seemingly a strong gross margin, though you have to compare it to industry norms and prior periods to know for sure.