Step 1)
Go to Catalog->"Products"->"Product Info"->"Inventory and Variants"->Check “This Product Has Special Price” and enter the related information.
Step 2)
Go to Design->Layout->Homepage->Drag & Drop the 'Home Specials' block to the 'Main Content' Section and remove the 'New Arrivals' block.
Now your customers can view your sale products on your store’s homepage.