Asked by Sans the skeleton

The exact value for the density of aluminum is 2.699 g/cubic centimeters. Working in the science lab at school, Amy finds the density of a piece of aluminum to be 2.96 g/cubic centimeters. What is Amy’s percent error? (Round to the nearest hundredth).
Answered by oobleck
(2.96-2.699)/2.699 = 0.0967