If your labor productivity for the first week in February is $60$ units per labor hour and it changes to $69$ units per labor hour in the second week of February, what is your productivity gain?

Do not round intermediate calculations.

Report your answer as a percentage $($not a decimal fraction$)($e$.$g$.35\mathrm{.}8,$ not $0\mathrm{.}358).$

Do not include the $"\%"$ when you type in the answer $($just type the number$).$

Show your answer to at least $4$ decimal places.

Don't put anything in your answer except the number.