The income statements of Oriole Corporation show the following amounts:

		2020			2019			2018
Net sales		$830			$800			$750
Cost of goods sold		520			493			435
Gross profit		310			307			315
Selling, general, and administrative expenses		190			145			107
Profit before tax		120			162			208

Using vertical (common-size) analysis, analyze Oriole Corporations declining profit before tax. (Round answers to 0 decimal places, e.g. 52%.)

		2020		2019		2018
Net sales		%		%		%
Cost of goods sold		%		%		%
Gross profit		%		%		%
Selling, general, and administrative expenses		%		%		%
Profit before tax		%		%		%