Hello, how to better determine the quality of muscle artifact removal EEG?

Hello everyone, I implemented a few methods to remove muscle artifacts from EEG signals, but I can not understand how I can clearly (not visually, not spectral analyzer, not SNR) determine which is method better? is it possible in % determine how much EEG signal was damaged after artifacts were removed?
I attached an example of my data, before and after artifact cleaning


age