diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 353fa9b..d3c2347 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -415,10 +415,17 @@
 	def update_picking_status(self):
 		total_picked_qty = 0.0
 		total_qty = 0.0
+		per_picked = 0.0
+
 		for so_item in self.items:
-			total_picked_qty += flt(so_item.picked_qty)
-			total_qty += flt(so_item.stock_qty)
-		per_picked = total_picked_qty / total_qty * 100
+			if cint(
+				frappe.get_cached_value("Item", so_item.item_code, "is_stock_item")
+			) or self.has_product_bundle(so_item.item_code):
+				total_picked_qty += flt(so_item.picked_qty)
+				total_qty += flt(so_item.stock_qty)
+
+		if total_picked_qty and total_qty:
+			per_picked = total_picked_qty / total_qty * 100
 
 		self.db_set("per_picked", flt(per_picked), update_modified=False)