Please explain how to get the percentage

Data for Variline Designs, Inc. follow: (Click the icon to view the data.) Read the requirements. Requirement 1. Prepare a horizontal analysis of the comparative income statement of Variline Designs, Inc. Round percentage changes to one decimal place. (Round the percentages to one decimal place, X.X%. Use a minus sign or parentheses to indicate a decrease Variline Designs, Inc. Comparative Income Statement Years Ended December 31, 2018 and 2017 Increase (Decrease) 2018 2017 Amount 430,000 $ 374.000 56000 Percentage Net Sales Revenue $ % Expenses: Cost of Goods Sold 204,000 187,000 % 17000 6350 Selling and Administrative Expenses 99,350 93,000 % 9,150 2,500 6650 Other Expenses % 312,500 Total Expenses 282,500 30000 % 117,500 $ 91,500 26000 Net Income $