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.
profit percentage (profit divided by cost) = $50/$100 = 50% profit percentage. R.O.I. (return on investment) multiple = $50/$100 (profit divided by cost). If your revenue is the same as your cost, that doesn't equate to 100% return on investment, it equates to 0%. The result above or below 100% can be calculated as the percentage of return on investment.