Answer
$2.4 \frac{m}{s^{2}}$ in the upward direction.
Work Step by Step
The upward normal force on you from the scale is (77 kg)(g) = 754.6 N.
Apply Newton’s second law to your body. Choose up to be the positive direction.
$$\Sigma F=F_N – mg = ma$$
$$a = \frac{ F_N-mg}{m} =\frac{754.6 N-(62 kg)(9.80 \frac{m}{s^{2}})}{62 kg} \approx 2.4 \frac{m}{s^{2}}$$
The answer is rounded to 2 significant figures.
The positive sign confirms that the acceleration is upward.