Please Show your work on an Excel Spreadsheet if possible. I need to understand how to answer this with an excel spreadsheet

SM.63 A small company has $6,750,000 in (annual) revenue, spends 41% of its revenues on purchases and has a net profit margin of 8.75%. They would like to increase their profits and they are looking at focusing in one of two directions. First, they think they can save 0.90% on their purchase expenses. Or second, they can focus on increasing sales. By what percentage would they have to increase sales in order to equal a 0.90% savings on purchasing expenses? (Write your answer as a percentage, and display your answer to two decimal places.)