How to you compute CPT PV without a financial calculator?

Barrys Steroids Company has $1,000 par value bonds outstanding at 14 percent interest. The bonds will mature in 50 years.

If the percent yield to maturity is 11 percent, what percent of the total bond value does the repayment of principal represent? Assume interest payments are annual. Use Appendix B and Appendix D for an approximate answer but calculate your final answer using the formula and financial calculator methods. (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.)