Horizontal Analysis. Does the below chart have the correct calculations?

HORIZONTAL ANALYSIS
Amazon
Comparative Income Statements
For the Years Ending December 31
					Percentage Difference
	Current Year (2020)	Prior Year (2019)	2 Years Prior (2018)		(CY - PY)/PY	(PY - 2YP)/2YP
Net Sales	386,064	280,522	232,887		38%	20%
Cost of goods sold	233,307	165,536	139,156		41%	19%
Gross Margin	152757	114986	93731		33%	23%
Operating expenses:	-75	201	296		-137.00%	-32.00%
Selling expenses	123265	95041	76678		30%	24%
Administrative expenses	6668	5203	4336		34%	20%
Total operating expenses	363165	265981	220,466		37.00%	21.00%
Income from continuing operations	24178	13976	11261		84%	15%
Income tax expense	-2863	-2374	-1197		21%	98%
Nonrecurring items	16	-14	9		-14%	-25%
Net income	21331	11588	10073		84%	15%