equivalent month this year

$\backslash$table$[[,$Last Year,Now,Cost Per Input Unit$],[$Units Produced,$1,200,1,200,],[$Labor $($hours$),300,275,$$$10$ per hour$],[$Resin $($pounds$),50,45,$$$5$ per pound$],[$Capital Invested $($$$),10,000,11,000,2\%$ per month$],[$Energy $($BTU$),3,000,2,850,$$$0\mathrm{.}50$ per BTU$]]$

The percent change in productivity for one month last year versus one month this year on a multifactor basis with dollars as the common denominator $=\%($enter your response as a percentage rounded to two decimal places$).$