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.
Quick Answer. To determine weight-loss percentage, the current weight is subtracted from the original weight. Then, that answer is multiplied by 100. That answer is divided by the original weight. For example, an individual who weighs 150 pounds and loses 15 pounds uses the following calculation: 150 pounds - 135 pounds = 15 x 100 = 1,500. 1,500 divided by 150, or the original weight, yields the answer of 10 percent.