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.
The result will be the current percentage of profit. Calculate the new profit margin by subtracting the new total cost from the current selling price and dividing by the current selling price. Multiply that by 100. The result will be the new percentage of profit given the changes in costs. Subtract the new profit margin from the old profit margin. The difference represents the margin impact of the projected change in costs.