An analyst notes the time that customer appointments end with a tax preparer that is assigned customers requiring only the $1040$EZ form. The times indicated in the table represent the departure times of the first eight clients for one tax preparation specialist. The $1040$EZ tax forms among the different customers are very similar. The tax preparer started the first return at $12$:$00$pm$.$

Customer # Time

$112$:$45$ pm

$21$:$22$ pm

$31$:$55$ pm

$42$:$26$ pm

$52$:$56$ pm

$63$:$24$ pm

$73$:$50$ pm

$84$:$15$ pm

Based on the data in Table $2\mathrm{.}15$ which value is closest to the learning rate for the tax preparer?

$80\%$

$92\%$

$87\%$

$82\%$