Using the VDB function:
The arguments for the VDB function are:
Argument  Required?  Description 

cost  Required  The initial cost of the asset. 
salvage  Required  The value at the end of the depreciation (the salvage value of the asset). This value can be 0. 
life  Required  The number of periods over which the asset is being depreciated (the useful life of the asset). 
start_period  Required  The starting period for which you want to calculate the depreciation. Start_period must use the same units as life. 
end_period  Required  The ending period for which you want to calculate the depreciation. End_period must use the same units as life. 
factor  Optional  The rate at which the balance declines. If factor is omitted, it is assumed to be 2 (the doubledeclining balance method). Change factor if you do not want to use the doubledeclining balance method. For a description of the doubledeclining balance method, see @Html.ActionLink("DDB", "DDB") 
no_switch  Optional  A logical value specifying whether to switch to straightline depreciation when depreciation is greater than the declining balance calculation.
• If no_switch is TRUE, Excel does not switch to straightline depreciation even when the depreciation is greater than the declining balance calculation.
• If no_switch is FALSE or omitted, Excel switches to straightline depreciation when depreciation is greater than the declining balance calculation.
