
Even though most developers work their hardest to ensure that the programs you download onto your Mac run smoothly, sometimes, things go wrong. One issue that may arise is an app using an exorbitant amount of energy or memory, causing your Mac to overheat or suffer severe battery drain.
Sometimes, simply closing an app doesn't do the trick. For example, if a program includes a helper tool, that tool may be the culprit. Closing the program may not solve the problem.
We've got a troubleshooting guide for finding out which apps are using the most percentage of processes on your computer.
Check Energy Consuming Apps
If you experience a fast drain on your MacBook's battery, it may be caused by certain programs running in the background. While you may have intended to run something like Spotify, it is possible that you have a program open that you didn't know about.

You can quickly check to see which apps are using a significant amount of energy by left clicking on the battery icon in the upper right corner of your laptop's tool bar. From the dropdown list, wait a few seconds until your Mac finishes collecting power usage information. Any apps that are using a lot of energy will be listed.
You can then find the app by searching in Finder and quit the program. Or, you can right click on the app to open Activity Monitor.
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Article Link: How to Troubleshoot Apps Overusing Energy in OS X