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.
Once you have the ratio for gross profit / total revenue, simply multiply the resulting decimal by 100 to get a percent value. 1  Example: For the sporting goods shop, the gross profit margin is: 55,000/100,000 = .55 Ã 100 = 55% 2  . In other words, on average, for each product we sell, we make 55% of the cost as profit.ross profit margin is the ratio of your gross profit to your total revenue. It's a representation of how much money you're actually making by selling your products-if, for instance, you sell products at $20, but it costs $10 to get each product on the shelf, you're only really making $10 for each product you sell. 2.