The number of cars at a dealership dropped from 64 to 48 after a weekend sail. what is the percent of decrease in the number of cars 20 percent 25 percent 33 percent 75 percent

To answer the question, first solve for the difference between the two number of cars. That is, 48 - 64 which is equal to -16. Divide this value by the original number of cars and multiply by 100%. 
                                   (-16 / 64) x 100% = -25%
Therefore, the percent decrease of the number of cars is 25%.

Idon’t know how to do that