diff --git a/bench/01-declarations.R b/bench/01-declarations.R
index 1fbebaf0b..a0c7e8df4 100644
--- a/bench/01-declarations.R
+++ b/bench/01-declarations.R
@@ -26,6 +26,10 @@ plot_against_base <- function(new_bm,
       new_bm <- dplyr::bind_rows(reference, new_bm)
       stopifnot(nrow(new_bm) == 2)
       diff_in_percent <- round(100 * diff(new_bm$p50) / new_bm$p50[1])
+      diff_in_percent <- ifelse(diff_in_percent > 0,
+        paste0("+", diff_in_percent),
+        diff_in_percent
+      )
       pr_comment <- glue::glue("* {name}: {round(new_bm$p50[1], 3)} -> {round(new_bm$p50[2], 3)} ({diff_in_percent}%)")
       cat(pr_comment, file = "pr-comment/info.txt", sep = "\n", append = TRUE)
     }