A chain of record stores called Vinyl Resting Place wants to calculate its sales growth. Here is some information about their performance: Total # of stores Total net sales #new stores April 2003 300 $55 MM 73 Net sales of new stores $14 MM April 2004 389 $77 MM 89 $17.6 MM Given these data, calculate Vinyl Resting Place's same-store sales growth. Round your answer to the nearest tenth of a percent.