diff --git a/erpnext/controllers/status_updater.py b/erpnext/controllers/status_updater.py
index df0fec8..e8e851d 100644
--- a/erpnext/controllers/status_updater.py
+++ b/erpnext/controllers/status_updater.py
@@ -285,7 +285,7 @@
 					ifnull((select
 						ifnull(sum(if(%(target_ref_field)s > %(target_field)s, abs(%(target_field)s), abs(%(target_ref_field)s))), 0)
 						/ sum(abs(%(target_ref_field)s)) * 100
-					from `tab%(target_dt)s` where parent="%(name)s"), 0), 2)
+					from `tab%(target_dt)s` where parent="%(name)s" having sum(abs(%(target_ref_field)s)) > 0), 0), 2)
 					%(update_modified)s
 				where name='%(name)s'""" % args)
 
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index 07c105c..909fa2c 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -309,7 +309,8 @@
 
 		for dn in set(updated_delivery_notes):
 			dn_doc = self if (dn == self.name) else frappe.get_doc("Delivery Note", dn)
-			dn_doc.update_billing_percentage(update_modified=update_modified)
+			if dn_doc.net_total > 0:
+				dn_doc.update_billing_percentage(update_modified=update_modified)
 
 		self.load_from_db()