Show progress bar percentage

qml/Main.qml

@@ -140,12 +140,24 @@ ApplicationWindow {
                     font.pixelSize: 14
                 }
 
-                ProgressBar {
+                Item {
                     Layout.fillWidth: true
-                    from: 0
+                    Layout.preferredHeight: 25
+
+                    ProgressBar {
+                        anchors.fill: parent
                         to: 100
                         value: factorizationController.progress
                     }
+
+                    Text {
+                        text: factorizationController.progress.toFixed(0) + "%"
+                        anchors.centerIn: parent
+                        font.pixelSize: 16
+                        color: "black"
+                        font.bold: true
+                    }
+                }
             }
         }