A stock is selling today for $25 per share. At the end of the year, it pays a dividend of $2 per share and sells for $28. What is the total rate of return on the stock? (Enter your answer as a whole percent.) What are the dividend yield and percentage capital gain? (Enter your answers as a whole percent.) Now suppose the year-end stock price after the dividend is paid is $21. What are the dividend yield and percentage capital gain in this case? (Negative amounts should be indicated by a minus sign. Enter your answers as a whole percent.) Is there any change in the dividend yield calculated in parts (b) and (c)