Does candle lose mass when melted down?

Candles are found in different shapes and are used in different occasions. From birthday parties to religious ceremonies, restaurants to churches, dinner tables to bathroom vanities candles are seen in every corner. 

After a candle is burned to its foot, a pile of wax will remain. Did you ever think how much wax comes off each candle? Is it the same amount as the initial candle? Is it more? Is it less?

Project description:
In this project you may find the answer for yourself. You may also compare different candles for any possible change in their masses. With this project it is easy to create a data table and a graph for your results. 
 Details of this project
More details or support on this project is available for the members of Material needed for experiment or a science kit about this title may be available at