A post office, named Brennen, was located in the limits of present-day Grove in 1888, but the city was not incorporated until the 1890s, Rose Stauber, Grove, Encyclopedia of Oklahoma History and Culture, making it the only incorporated town in Delaware County when Oklahoma became a state.
To calculate the mass percent or weight percent of a solution, you must divide the mass of the solute by the mass of the solution (both the solute and the solvent together) and then multiply by 100 to change it into percent.
Using this method to calculate body fat, find out what percentage of your body weight is fat. The rest of it is lean body mass. So if you weigh 150 lbs, and your body fat percentage is 30%, that is 45 lbs. That means your lean body mass is 150 minus 45, which is 105 lbs.