diff --git a/app/Console/Commands/SendProductionReport.php b/app/Console/Commands/SendProductionReport.php
index 6b7b88d..d0f9736 100644
--- a/app/Console/Commands/SendProductionReport.php
+++ b/app/Console/Commands/SendProductionReport.php
@@ -241,7 +241,7 @@ class SendProductionReport extends Command
                 }
 
                 if ($totalTargetQuantity > 0) {
-                    $efficiency = ($totalTargetQuantity / $productionQuantity) * 100;
+                    $efficiency = ($productionQuantity / $totalTargetQuantity) * 100;
                 } else {
                     $efficiency = 0;
                 }
diff --git a/resources/views/mail/production_report.blade.php b/resources/views/mail/production_report.blade.php
index 9bb759a..2ed2fdf 100644
--- a/resources/views/mail/production_report.blade.php
+++ b/resources/views/mail/production_report.blade.php
@@ -70,6 +70,12 @@
     </thead>
     <tbody>
         @foreach($tableData as $row)
+        @php $efficiency = (float) $row['efficiency']; if ($efficiency < 80) { $bgColor = '#ff4d4d';
+        }
+        elseif ($efficiency < 99) { $bgColor = '#ffd633';
+        }
+        else { $bgColor = '#4caf50';
+        } @endphp
         <tr>
             <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['no'] }}</td>
             <td style="border: 1px solid #444; padding: 8px; text-align: center; white-space: nowrap;">{{ $row['plant'] }}</td>
@@ -78,7 +84,17 @@
             {{-- <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['capacityQuantity'] }}</td> --}}
             <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['targetQuantity'] }}</td>
             <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['productionQuantity'] }}</td>
-            <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['efficiency'] }}</td>
+            {{-- <td style="border: 1px solid #444; padding: 8px; text-align: center;">{{ $row['efficiency'] }}</td> --}}
+            <td style="
+                border: 1px solid #444;
+                padding: 8px;
+                text-align: center;
+                background-color: {{ $bgColor }};
+                color: {{ $efficiency < 80 || $efficiency >= 99 ? '#ffffff' : '#000000' }};
+                font-weight: bold;
+            ">
+                {{ $row['efficiency'] }}
+            </td>
         </tr>
         @endforeach
     </tbody>