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.
Multiply the result by 100 to calculate the return-on-sales ratio as a percentage. In this example, multiply 0.1565 by 100 to get 15.65 percent.tep 1. Subtract the expenses from the revenue to find your profit on your sales. For example, if you have $575,000 in sales and $485,000 in expenses, your profit equals $90,000. Step 2. Divide the profit by the sales to find the portion of each dollar you keep as profit.