Final answer:
The productivity growth from June 2013 to June 2014 was -5.91%, which indicates a decrease in the number of customers assisted per labor dollar.
Step-by-step explanation:
The question asks us to calculate the productivity growth over a one-year period based on the number of customers assisted per labor dollar. To find the productivity growth, we compare the number of customers assisted per labor dollar in June 2013 and June 2014.
Step 1: Calculate the productivity for each year.
In June 2013, the number of people assisted was 126 and the staff labor cost was $3,240, giving us a productivity rate of 126 people / $3,240 which equals approximately 0.0389 customers per dollar.
In June 2014, the number of people assisted was 145 and the staff labor cost was $3,960, giving us a productivity rate of 145 people / $3,960 which equals approximately 0.0366 customers per dollar.
Step 2: Calculate the percentage change in productivity.
The productivity growth is calculated as ((New Productivity - Old Productivity) / Old Productivity) x 100%. Plugging in the values we get
((0.0366 - 0.0389) / 0.0389) x 100% = minus 5.91%
The productivity growth from June 2013 to June 2014 is minus 5.91% customers assisted per labor dollar, indicating a decrease in productivity.