Mix together tuna, celery, 1/4 cup mayonnaise, 1/4 cup yogurt and salt in bowl and set aside.
In large pot fill with water. Add eggs. Bring to a boil and cook for 2 minutes. Turn off stove, cover pot and allow pot to sit for 15 minutes. Drain eggs and completely cool.
When eggs are cool take off shell. Slice in half and place yolks in a small bowl.
Add 1/4 cup mayonnaise, 1/4 cup yogurt and 1/2 teaspoon salt to egg yolks and mix together until smooth and creamy. Set aside.
Place on teaspoon of tuna salad mixture into each egg white.