Syntax: @VDB(C, S, L, S, E)
C = the initial cost of the asset
S = salvage value (the value at the end of the depreciation)
L = life (the total number of periods over which the
asset is being depreciated)
S = start period (first period in the calculation)
E = end period (last period in the calculation)
@VDB returns the depreciation of an asset between two specific period using the fixed-declining balance method.
Examples:
@VDB(10000, 500, 120, 2, 4) = 319.6289