How much water is in popcorn. . . .

In this lab we were suppost to find the mass of water loss from the certain amount of popcorn and calculate what percent of the original mass was the water given off in the popping. First we got a 1000-ml beaker and covered at the bottom with vegetable oil. Put foil over the top and it weighted 221 1/2 grams. Then we added exactly 28 corns and then it weighted at 225 grams. Pocked holes into the top of the foil then we lit that baby up. After all the popcorn was popped we let it set to cool and then weighted it at 2221/2 grams. We got that 1.9% of water was given of the popping.  mm then we got some popcorn for everyone:) it was a very good day lol