The calculation of depreciation using the declining-balance method. how do you do this formula?

Liberty capital had seen its net income increase dramatically from the previous year, yet over the same period of time, its net cash provided from operations had decreased. which of the following would explain how this situation came about? liberty's expenditures on fixed assets had declined. liberty's depreciation and amortization expenses had declined. liberty's interest expense had increased. liberty's cost of goods sold had increased.