Subtract 24 to 78. Divide the answer by 24. Multiply it by 100. So the final answer is 225%. We have a starting value of 24. In order to reach 78, we need to multiply a number to 24 and add it to 24. Making the equation 24 + 24P = 78. Transpose 24 to the other side, you’ll get 24P = 78--24. 24P=54. Divide both sides by 24, you’ll get P = 2.25 Multiply 2.25 by 100 to get the percentage. So, you’ll get the final answer 225%