Calculates an assets depreciation over a period of time utilising the arithmetic declining balance method.
DECLINING_BALANCE(cost: Number, salvage: Number, life: Number, period: Number, month: Number = 12) => Number
The initial cost of the asset
The value of the asset at the end of depreciation
The number of periods over which the asset is depreciated
The single period within life for which to calculate depreciation
The number of months in the first year of depreciation