diff --git a/core/apps/orders/models/party.py b/core/apps/orders/models/party.py
index bcb8993..a5f2628 100644
--- a/core/apps/orders/models/party.py
+++ b/core/apps/orders/models/party.py
@@ -76,7 +76,7 @@ class Party(BaseModel):
         for order in self.orders.all():
             count += 1
             percentage += order.completion_percentage
-        self.process == percentage / count
+        self.process = percentage / count
 
         return super().save(*args, **kwargs)