diff --git a/NEWS.md b/NEWS.md
index 3fdbd13a..4b9adc59 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -29,6 +29,8 @@
 
 ## Bug fixes
 
+* `adorn_percentages()` was refactored for compatibility with `dplyr` package versions > 1.0.99 (#490)
+
 * When a numeric variable is supplied as the 2nd variable (column) or 3rd variable (list) of a `tabyl`, the resulting columns or list are now sorted in numeric order, not alphabetic. (#438, thanks **@daaronr** for reporting and **@mattroumaya** for fixing)
 
 * `tabyl()` now succeeds when the second variable is named `"n"` (#445).
diff --git a/R/adorn_percentages.R b/R/adorn_percentages.R
index d8ceb534..7f193b64 100644
--- a/R/adorn_percentages.R
+++ b/R/adorn_percentages.R
@@ -91,9 +91,9 @@ adorn_percentages <- function(dat, denominator = "row", na.rm = TRUE, ...) {
       if ("col" %in% attr(dat, "totals") & !explicitly_exempt_totals) {
         cols_to_tally <- c(cols_to_tally, ncol(dat))
         if ("row" %in% attr(dat, "totals")) {
-          col_sum <- c(col_sum, sum(dplyr::last(dat)[-nrow(dat)]))
+          col_sum <- c(col_sum, sum(dat[-nrow(dat), ncol(dat)]))
         } else {
-          col_sum <- c(col_sum, sum(dplyr::last(dat)))
+          col_sum <- c(col_sum, sum(dat[ , ncol(dat)]))
         }
       }
       dat[cols_to_tally] <- sweep(dat[cols_to_tally], 2, col_sum, `/`) # from http://stackoverflow.com/questions/9447801/dividing-columns-by-colsums-in-r