There are two popular bodies of certification for Organic Farming the European Commission and the USDA.
Look for logos like:
These logo are meant to help identify authentic, well certified organic foods. Learn to read the labels properly.
A label which says Organic would mean atleast 95% of it’s ingredients are organic the remainder must consist of nonagricultural substances approved on the USDA's National List of non-organically produced agricultural products that are not commercially available in organic form
Some labels read 100% Organic, and in those cases all their ingredients are organic.
Other Labels read as “Made with Organic ingredients”. In this case at least 70% of the ingredients need to be organic, the rest may be conventionally grown or approved non-agricultural products approved by the food authority bodies.