Bug fix - Multiplying float by decimal

- Overage percentage now uses explicit decimal multiplication

InvenTree/part/models.py

@@ -27,6 +27,7 @@ from django_cleanup import cleanup
 
 from mptt.models import TreeForeignKey
 
+from decimal import Decimal
 from datetime import datetime
 from fuzzywuzzy import fuzz
 import hashlib
@@ -1208,6 +1209,9 @@ class BomItem(models.Model):
                 if percent < 0:
                     percent = 0
 
+                # Must be represented as a decimal
+                percent = Decimal(percent)
+
                 return int(percent * quantity)
 
             except ValueError: