A manager checked production records and found that a worker produced $136$ units while working $40$ hours. In the previous week, t same worker produced $81$ units while working $30$ hours.

a$.$ Compute Current period productivity and Previous period productivity.

Note: Round your answers to $2$ decimal places.

$\backslash$table$[[$Current period productivity,,Units per hour$],[$Previous period productivity,,Units per hour$]]$

b$.$ Did the worker's productivity increase, decrease, or remain the same?

Note: Round your intermediate calculations and final answer to $2$ decimal places.

Worker's productivity

by

$\%$