Calories in Greek Salad

I had a greek salad recently and was curious about how much a single potion of that cost me calorie wise. AFter w a bit of research online the numbers i got were all over the place, not only that but none of the recipes were ever the same anyway i decided to average it out between home recipes and fast food outlets, the calories in greek salad were mostly from the feta cheese (i always ask for extra) so after avergig it out, a single potion of the average greek salad contains 90 calories. This number goes up if you eat it from a fast food outlet, with the average coming in at 220 calories.