The plugin for Minecraft in question allows you to subtract money from the player when they die, based on the percentage or amount set in the configuration file or in-game.

The plugin offers four commands:

• /deathplayer reload - allows you to reload the plugin;
• /deathplayer percentage enable or disable - enables or disables the percentage mode;
• /deathplayer set percentage <percentage> - allows you to set the percentage of money subtracted (the percentage should be expressed in this way: 0.1 = 10%, 0.01 = 1%, 0.001 = 0.1%);
• /deathplayer set quantity <quantity> - allows you to set the amount of money subtracted.

The quantity mode only works when the percentage mode is disabled. In addition, the messages that the plugin sends to the player are customizable up to 99%.

https://www.spigotmc.org/resources/vault.34315/​

The permissions required to use the plugin are:

• deathplayer.reload for the /deathplayer reload command;
• deathplayer.percentage for the /deathplayer percentage command;
• deathplayer.set for the /deathplayer set percentage and /deathplayer set quantity commands.