PLS HELP I NEED THIS RIGHT NOW

Mac measured the density of silver three times and obtained the following results.
Trial 1: 10.6 g/cm3
Trial 2: 10.8 g/cm3;
Trial 3: 9.6 g/cm3.
Silver has a density of 10.5 g/cm3
A. Calculate Mac's percent error for each trial. (Label each trial clearly.) Show your work.
B. Which trial had the greatest percent error?