ChangeCo.'s stock trades now for $27.47 a share and pays an annual dividend that is expected to increase by 3.00% annually. The company just paid a dividend of $.80 a share. Due to a change in the company's risk profile, its expected rate of return changed and the price of the stock recently increased by 166.7% as a result. What is the percentage point change in the expected rate of return of the stock (hint: only the company's expected rate of return changed - everything else remained constant)?