Answer
-25$^{\circ}$29'6"
Work Step by Step
1. Start by converting decimal place of degree to minutes by multiplying it by (60). Ignore the negative sign.
-25$^{\circ}$+-0.485 (60')= -25$^{\circ}$29.1'
2. Then multiply the decimal part of unites by (60) to convert to seconds
-25$^{\circ}$29' +-0.1(60)"=-25$^{\circ}$29'6"