Convert each percentage to a decimal by dividing by 100. For example, if a baseball player gets a hit 35 percent of the time and 15 percent of those hits are home runs and you want to know what the probability of hitting a home run equals, divide 35 by 100 and 15 by 100 to get 0.35 and 0.15.
Multiply the two percentages expressed as decimals by each other. In this example, multiply 0.35 by 0.15 to get 0.0525.
Multiply the decimal by 100 to find the probability expressed as a percentage. Completing the example, multiply 0.0525 by 100 to get a 5.25 percent probability that the player hits a home run.