Using the REL chart provided and a power rule of $2,$ calculate the initial A$-$Efficiency ratio of the layout provided and then calculate the A$-$Efficiency ratio after performing ONE iteration of pairwise exchange that best improves the layout regarding adjacency. Input answers as numbers only without percentage sign and round to nearest hundredths $($i$.$e$.$ answer is $25\mathrm{.}675\%,$ input $25\mathrm{.}68)$