Depriciation under companies act 2013

We are small company as per companies act 2013

& follows company's act 1956 uptill now in charging depreciation. Now we want to follow new companies act 2013 regarding charging of depriciation for the financial year 2016-17. What should we do? & what will be the impact of depreciation over or undercharged in the books of accounts. ?

Please guide me the best in this regards.

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