Palpatine purchased 100 shares of Death Star, Inc stock at $30 per share last year and sold them 12 months later for $24 per share.

Due to a very rapid expansion, the shares split 2 for 1 shortly after Palpatine purchased the stock.

If the stock paid $0.25 per original share in dividends last year, what is Palpatine's annualized return (round to 2 decimals)?