Primary Cause of Necrotizing fasciitis. The primary cause of Necrotizing fasciitis is the result: 1  of transmission from another person under rare circumstances, such as immunocompromised people or during surgery with contaminated surgical tools, or according to rare circumstances as noted from reputable sources.o research the causes of Necrotizing fasciitis, consider researching the causes of these these diseases that may be similar, or associated with Necrotizing fasciitis: 1  Fournier gangrene. 2  Meleney's ulcer. 3  Meleney ulcer. 4  Postoperative progressive bacterial synergistic gangrene. 5  Flesh-eating bacteria. 6  Cullen's ulcer.
How to Calculate Monthly Accumulated Depreciation. Depreciation can be calculated on a monthly basis by two different methods. Over time, the assets a company owns lose value, which is known as depreciation. As the value of these assets declines over time, the depreciated amount is recorded as an expense on the balance sheet.
Step 2. Enter the number of payment periods in cell A2. If you are calculating monthly payments, multiply the number of years by 12 using the formula =years*12. Replace years with the actual number of years, such as =5*12 for 5 years. If this is the variable you wish to calculate, omit this step.tep 8. Type =RATE(A2,A4,A3) in cell A8 to calculate the periodic interest rate of the annuity. If you are using monthly periods, rather than annual periods, you may enter =RATE(A2,A4,A3)*12 to calculate the annual interest rate.