Since 35% is 0.35 ( by moving the decimal point 2 spots to the left) and 100% (the total value) is 1, we want to see how much we want to multiply the value (we'll call it x for now) by to get the total value. To get that, we divide 1 by 0.35 to get 1/0.35. Therefore, the formula is x*1/0.35