Perez Corporation reported the following operating results for two consecutive years: Required a. Compute the percentage changes in Perez Corporations income statement components between the two years. (Negative amounts should be indicated by a minus sign. Round your percentage answers to 1 decimal place. (i.e., 0.234 should be entered as 23.4).)

	Year 3	Year 2	Percentage Change
Sales	$ 1,296,000	$1,001,500		%
Co797st of goods sold	797,040	600,900
Gross Margin	498,960	400,600
Operating expenses	301,000	197,500
Income before taxes	197,960	203,100
Income taxes	61,600	52,700
Net income (loss)	$136,360	$150,400