Brown's, a local$$ bakery, is worried about increased costs particularly energy. Last$$ year's records can provide a fairly good estimate of the parameters for this year. Wende$$ Brown, the$$ owner, does not believe things have changed$$ much, but she did invest an additional $$$$2$ comma $5002,500$ for modifications to the$$ bakery's ovens to make them more energy efficient. The modifications were supposed to make the ovens at least $2020\%$ more efficient. Brown has asked you to check the energy savings of the new ovens and also to look over other measures of the$$ bakery's productivity to see if the modifications were beneficial. You have the following data to work$$ with:

$$

Last Year

Now

Production$($dozen$)$

$1$ comma $6001,600$

$1$ comma $6001,600$

Labor$($hours$)$

$340340$

$320320$

Capital Investment$($$$)$

$15$ comma $00015,000$

$17$ comma $50017,500$

Energy$($BTU$)$

$3$ comma $0003,000$

$2$ comma $7502,750$

Part $2$

Energy productivity increase$=$ enter your response here$\%($enter your response as a percentage rounded to two decimal places and include a minus sign if$$ necessary$).$