"If you only knew the magnificence of the 3, 6 and 9, then you would have the key to the universe."

~ Nikola Tesla

BLOCK REWARD = % OF SUPPLY

The block subsidy (number of bitcoins rewarded for each newly mined block) represents the percentage of the total supply that will be mined during that epoch.

For example, the current block reward between 2024-2028 is 3.125 bitcoin.

In these same four years, 3.125 % of the 21 million bitcoins will be mined.

Source: @bitcoinfool