1
Try something like
from django.db.models import F
Project.objects.annotate(x=F('raised_amount') / F('total_amount')).filter(x__lt=0.2)
Source:stackexchange.com
[Fixed]-Doing a calculation while querying the database in Django
1
Try something like
from django.db.models import F
Project.objects.annotate(x=F('raised_amount') / F('total_amount')).filter(x__lt=0.2)