Recipe costing question, a 5oz piece of salmon cost $6.00 and to get a 30% food cost would I divide 100 by?

.30 and get 3.3 then take $6.00 x 3.3 to get $19.80 is this right.





Does this make sense, to get a 100% food cost @ 30% or at any % I would see how many times that number goes into 100. Or is there another way to do this. Thanks for the help.Recipe costing question, a 5oz piece of salmon cost $6.00 and to get a 30% food cost would I divide 100 by?
the 21.8% is the total food cost / menu price.