I only know how to do this with a share amount, not sure if unknown

Compute the total and annual return on the following investment. Four years after paying $3900 for shares in a startup company, you sell the shares for $3200 (at a loss). The total return is %. (Do not round until the final answer. Then round to the nearest tenth as needed.) The annual return is %. (Do not round until the final answer. Then round to the nearest tenth as needed.) Enter your answer in each of the answer boxes raue TUTT Type here to search Ofe LH 9 Be