Answer
The percentage deviation is $~~0.77~\%$
Work Step by Step
We can find the percentage deviation for $^{197}Au$:
$\frac{M_{app}-M}{M}~\times 100\%$
$= \frac{A~m_p-196.966 552~u}{196.966 552~u}~\times 100\%$
$= \frac{(197)(1.673\times 10^{-27}~kg)-(196.966 552)(1.660538782\times 10^{-27}~kg)}{(196.966 552)(1.660538782\times 10^{-27}~kg)}~\times 100\%$
$= 0.77~\%$
The percentage deviation is $~~0.77~\%$
