RoboGarden sells a robot lawn aerator. At the current price, RoboGarden's contribution margin is $$142\mathrm{.}33$ per unit. Because of a shortage of silicon chips, RoboGarden expects variable cost to increase by $$12\mathrm{.}03.$ In response, RoboGarden is thinking about raising its selling price by $$33\mathrm{.}91.$ Calculate the percent profit breakeven metric for this situation. Report the correct sign for the result. Report your answer as a percent. Report $-25\mathrm{.}5\%,$ for example, as $"-25\mathrm{.}5".$ Rounding: tenth of a percent.