Don´t reset items when clicking change button

templates/index.html

@@ -81,7 +81,7 @@
                         <td>
                             <div class="input-container">
                                 <input type="text" class="form-control" name="given" placeholder="{{ given }}">
-                                <button type="submit" class="btn btn-xl btn-primary custom-btn-size-med">🧾</button>
+                                <button type="submit" name="wert" value="-2" class="btn btn-xl btn-primary custom-btn-size-med">🧾</button>
                             </div>
                         </td>
                         <td class="bold-row">🪙 {{ change }}€</td>