Solve for the unknown interest rate in each of the following: $($Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$Present Value,Years,Interest Rate,Future Value$],[$$$,795,63,$T$.,\%,$$$,1,541],[,985,7[,,,,1,878],[,23,000,18,,,,149,832],[,78,300,21,,,,328,815]$