Update battery charge/drain label.

Match UX spec.

Change-Id: If1408458d488ac2ae3a63449e44ff18fc56e08d5
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index 8abe30d..e3335b8 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -444,9 +444,13 @@
     }
 
     public static String getBatteryPercentage(Intent batteryChangedIntent) {
+        return String.valueOf(getBatteryLevel(batteryChangedIntent)) + "%";
+    }
+
+    public static int getBatteryLevel(Intent batteryChangedIntent) {
         int level = batteryChangedIntent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
         int scale = batteryChangedIntent.getIntExtra(BatteryManager.EXTRA_SCALE, 100);
-        return String.valueOf(level * 100 / scale) + "%";
+        return (level * 100) / scale;
     }
 
     public static String getBatteryStatus(Resources res, Intent batteryChangedIntent) {