Grouper Piping Company manufactures PVC pipe. The company has provided the following selected financial information:

		2020		2021
Accounts receivable		$77,000		$57,000
Inventory		97,000		77,000
Total current assets		227,000		257,000
Total assets		587,000		467,000
Current liabilities		47,000		37,000
Total liabilities		157,000		137,000
Net credit sales		307,000		367,160
Cost of goods sold		202,000		228,400
Net income		63,000		69,000

What is Grouper gross margin percentage for 2021? (Round answer to 2 decimal places, e.g. 52.75.)

Gross margin percentage

enter gross margin in percentages %