Zareb started a business on $1$ April $20-4.$ He decided to use the revaluation method to calculate the depreciation on his fixtures and fittings.

Fixtures and fittings, $$9800$ were purchased on $1$ April $20-4$ which Zareb expected to have a useful life of four years. Additional fixtures and fittings, $$1200,$ were purchased during the year. On $31$ March $20-5$ Zareb valued his fixtures and fittings at $$8700.$

What was the depreciation charge for the year ended $31$ March $20-5?$