PLEASE HELP WITH THE PERCENTAGES on the Horizontal Analysis, URGENT!

I do NOT think they are correct the percentages I have filled in the boxes. I gave it a try and struggled. Please help me!

Horiz Analysis Horiz Analysis Vertic Analysis Vertic Analysis Inc St Cash Flows Ratios from Oper Bal St Bal Sheet Inc St Requirement Prepare a vertical analysis on the partial income statements for 2017 and 2018. Enter decreases as negati amounts/percents. C. Manuel Inc. PARTIAL INCOME STATEMENT (HORIZONTAL ANALYSIS) For the years ended Decem ber 31, 2017 and 2018 Increase/decrease Amount 2018 2017 Percent $ $ Sales 755,000 717.000 38,000 5.24% 314,000 Cost of goods sold 383,000 69,000 21.81% Gross margin 372,000 403,000 (31,000) (8.83)% Expenses 37,000 51,000 (28.85)% Depreciation expense (14,000) Other operating expenses 162.000 28,000 20.49% 134,000 Total operating expenses 14,000 199,000 185,000 5.75% 218,000 $ 173,000 (45,000) (23.16)% Operating income Cash Flows from Oper Horiz Analysis Bal St