airtel africa said tuesday it welcomed the changes to operations in nigerias foreign exchange market unveiled by the countrys central bank as they are a positive move toward a more stable foreign exchange market the londonlisted africafocused telecommunications company said that as a result of the changes the dollar has appreciated against the nigerian naira in the investors and exporters market trading segment airtel said that a recent currencydevaluation sensitivity analysis highlighted that a 1 devaluation in the naira would have a negative impact on revenue of 22 million and of 12 million on earnings before interest taxes depreciation and amortization it added that the dollar component of operating costs within the nigerian system was minimal and as such it didnt anticipate a material effect on ebitda margin the market expectation is that the new foreign currency policy and subsequent realignment of the several market exchange rates will provide greater us dollar liquidity and help to alleviate the challenges faced in the last few years to access us dollars in the market the company said