According to the table, which profession is expected to lose the highest percentage of jobs?

\[
\begin{array}{|l|c|c|c|c|}
\hline
& 220.3 & 166.1 & -54.2 & -24.6 \\
\hline
\text{Data entry keyers} & 161.4 & 119.7 & -41.7 & -25.8 \\
\hline
\text{Sewing machine operators} & 129.6 & 91.0 & -38.6 & -29.8 \\
\hline
\begin{array}{l}
\text{Postal service mail sorters,} \\
\text{processors, and processing} \\
\text{machine operators}
\end{array} & 596.8 & 567.6 & -29.2 & -4.9 \\
\hline
\begin{array}{l}
\text{Farmworkers and laborers,} \\
\text{crop, nursery,} \\
\text{and greenhouse}
\end{array} & 104.4 & 78.2 & -26.2 & -25.1 \\
\hline
\begin{array}{l}
\text{Word processors} \\
\text{and typists}
\end{array} & 66.9 & 45.7 & -21.3 & -31.8 \\
\hline
\text{Postal service clerks} & \text{---} \\
\hline
\end{array}
\]

A. Postal service mail carriers
B. Data entry keyers
C. Sewing machine operators
D. Postal service clerks

To determine which profession is expected to lose the highest percentage of jobs according to the table, we need to look at the percentage change for each listed job:

1. Data Entry Keyers: The percentage change is -25.8%.
2. Sewing Machine Operators: The percentage change is -29.8%.
3. Postal Service Mail Sorters, Processors, and Processing Machine Operators: The percentage change is -4.9%.
4. Farmworkers and Laborers, Crop, Nursery, and Greenhouse: The percentage change is -25.1%.
5. Word Processors and Typists: The percentage change is -31.8%.
6. Postal Service Clerks: (There is no percentage change given for this job in the original table)

Given the choices, the relevant percentages from those options are:

- Data Entry Keyers: -25.8%
- Sewing Machine Operators: -29.8%
- Postal Service Clerks: Not applicable from the provided table data.

Comparing the options:

- Data entry keyers are expected to lose 25.8% of their jobs.
- Sewing machine operators are expected to lose 29.8% of their jobs.

The highest percentage loss among the compared jobs is for sewing machine operators at -29.8%.

Therefore, according to the table data, the profession expected to lose the highest percentage of jobs is sewing machine operators.