diff --git a/StockingData/Controllers/GraphController.cs b/StockingData/Controllers/GraphController.cs
index aafd024..717157b 100644
--- a/StockingData/Controllers/GraphController.cs
+++ b/StockingData/Controllers/GraphController.cs
@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Mvc;
 using StockingData.Lib.IO.Repositories;
+using StockingData.Lib.Services;
 using StockingData.Models;
 
 namespace StockingData.Controllers;
@@ -22,13 +23,14 @@ public class GraphController : Controller
         }
 
         var records = await this.stockRepository.FetchStockRecordByIdAsync(product.ProductId).ConfigureAwait(false);
+        var transformer = new GraphViewTransformer(records);
 
         var model = new GraphViewModel()
         {
             ProductId = product.ProductId,
             Title = product.Title,
             Code = product.Code,
-            Stocks = records,
+            Stocks = transformer.Transform(),
         };
 
         return View(model);
diff --git a/StockingData/Controllers/StockProductsController.cs b/StockingData/Controllers/StockProductsController.cs
index 23e5f7f..00bda87 100644
--- a/StockingData/Controllers/StockProductsController.cs
+++ b/StockingData/Controllers/StockProductsController.cs
@@ -50,6 +50,6 @@ public class StockProductsController : Controller
             await this.stockRepository.UpdateStockCountAsync(stockId, count).ConfigureAwait(false);
         }
 
-        return RedirectToAction("Register", "SaleProducts");
+        return RedirectToAction("List", "Products");
     }
 }
diff --git a/StockingData/Lib/Services/GraphViewTransformer.cs b/StockingData/Lib/Services/GraphViewTransformer.cs
new file mode 100644
index 0000000..cf1c977
--- /dev/null
+++ b/StockingData/Lib/Services/GraphViewTransformer.cs
@@ -0,0 +1,24 @@
+using StockingData.Lib.Data;
+
+namespace StockingData.Lib.Services;
+
+public class GraphViewTransformer
+{
+    private readonly IEnumerable<StockTable> records;
+    public GraphViewTransformer(IEnumerable<StockTable> records)
+    {
+        this.records = records;
+    }
+
+    public IEnumerable<StockTable> Transform()
+    {
+        var list = new List<StockTable>();
+        foreach (var item in this.records)
+        {
+            item.SaleCount = item.DisplayCount - item.StockCount;
+            list.Add(item);
+        }
+
+        return list;
+    }
+}
diff --git a/StockingData/Views/Shared/_Layout.cshtml b/StockingData/Views/Shared/_Layout.cshtml
index d0d14fc..91eb761 100644
--- a/StockingData/Views/Shared/_Layout.cshtml
+++ b/StockingData/Views/Shared/_Layout.cshtml
@@ -31,9 +31,6 @@
                         <li class="nav-item">
                             <a class="nav-link text-dark" asp-area="" asp-controller="StockProducts" asp-action="Register">在庫数登録</a>
                         </li>
-                        <li class="nav-item">
-                            <a class="nav-link text-dark" asp-area="" asp-controller="SaleProducts" asp-action="Register">販売個数登録</a>
-                        </li>
                         <li class="nav-item">
                             <a class="nav-link text-dark" asp-area="" asp-controller="Products" asp-action="List">商品一覧</a>
                         </li>