A tutorial on using the Progress command to display the percentage of copied data for the cp, mv, dd, and tar commands was published by TecMint.

Progress - Show Progress of Linux Commands (cp, mv, dd, tar)

Progress is a command that looks for coreutils commands (cp, mv, dd, tar, gzip/gunzip, cat, etc.) currently executed and shows the percentage of data copied.

Progress - Show Progress of Linux Commands (cp, mv, dd, tar)