can you please help me solve these economic question ?I am not being able to answer in percentage

Sales in a company are $189 million in 2009 and increase $199 million in 2010. Compute the percentage increase in sales using the usual formula 100 x Sales2010 - Sales 2009 Sales 2009 Compare this value to the approximation 100x In (Sales2010) - In (Sales2009) ] 100 x Sales2010 - Sales 2009 Sales2009 100 x [In (Sales2010) - In (Sales2009) ] = % (Express your response as a percentage and round to three places) Now, assume that sales in a company are $189 million in 2009 and increase $261 million in 2010. 100 x Sales2010 - Sales 2009 % Sales 2009 100 x [In (Sales2010) - In (Sales2009) ] = % (Express your response as a percentage and round to three places) The approximation performs when the change is small. The quality of the approximation as the percentage change increases