It's 230% yearly, every year.
Does this change the 'rare' status at all?
Define rare.
[ANN] PlatinumBAR XPTX - Rare Cryptocurrency with PoW / PoS (230%) ...
When originally announced it was 23% IIRC, now it's 230%. This will affect the total supply of coins. 230% is compelling since it is a massive amount of interest. The 100 XPTX I bought yesterday on Cryptopia will turn into almost 40,000 XPTX in 5 years. The growth rate is exponential. In 10 years the total supply of XPTX will be over 15,000,000,000 coins and my little stockpile of 100 coins will have turned into 15,000,000 coins. In 20 Years the supply will be 2,300,000,000,000,000.
I am not smart enough to know how this will affect the future value of the coin or what Crypto will look like i n 5-10 years, so this may all be irrelevant.
The rate can always be changed in the future depending on what the community wants. Right now we're going with the 230%.