Please answer the given financial question based on the context.
Context: .
|currency|2012|2011|2010|
|real|$ 40.4|$ 42.4|$ 32.5|
|euro|27.1|26.4|18.6|
|pound sterling|18.5|17.6|9.0|
|indian rupee|4.3|3.6|2.6|
|total impact|$ 90.3|$ 90.0|$ 62.7|
the impact on earnings of the foregoing assumed 10% ( 10 % ) change in each of the periods presented would not have been significant . revenue included $ 100.8 million and operating income included $ 9.0 million of unfavorable foreign currency impact during 2012 resulting from a stronger u.s . dollar during 2012 compared to 2011 . our foreign exchange risk management policy permits the use of derivative instruments , such as forward contracts and options , to reduce volatility in our results of operations and/or cash flows resulting from foreign exchange rate fluctuations . our international operations' revenues and expenses are generally denominated in local currency , which limits the economic exposure to foreign exchange risk in those jurisdictions . we do not enter into foreign currency derivative instruments for trading purposes . we have entered into foreign currency forward exchange contracts to hedge foreign currency exposure to intercompany loans . as of december 31 , 2012 , the notional amount of these derivatives was approximately $ 115.6 million and the fair value was nominal . these derivatives are intended to hedge the foreign exchange risks related to intercompany loans , but have not been designated as hedges for accounting purposes. .
Question: what was the percentage change in the impact of the euro on earnings from 2010 to 2011?


Answer: The answer is:0.41935