StarChefs explains that food cost percentage is figured by taking the total beginning inventory cost plus purchases minus the ending inventory costs; then dividing that number by food sales. More »

To calculate inventory turnover, divide the cost of goods sold by average inventory for the quarter or for the year. Use this information to determine if inventory turnover supports the number of quarterly or yearly sale... More »

According to Investopedia, the cost of sales formula is used by adding the amount of purchases to an existing inventory, then subtracting the remaining amount of inventory at the end of a sales period. The resulting amou... More »

Prorated amounts are calculated by dividing the cost of a service by the number of days in the service period, according to Lucas Hall from Landlordology. The resulting number is then multiplied by the number of days the... More »

Depreciation expenses are calculated by dividing the cost of an asset by the number of years a company expects to own it, explains CPA Mike Piper for The Oblivious Investor. Straight-line depreciation calculates the depr... More »

To find a percentage increase, divide the difference between the new and old value by the old value, explains TutorVista.com. The result is then multiplied by 100 to give the percentage. More »

The inventory turnover ratio is a formula that displays how many times inventory is replaced over a period of time by dividing cost of goods sold over average inventory. This ratio is used to identify the efficiency of i... More »