Basic ggplot - categorical x-axis

tidyverse
,
2

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library(ggplot2)
library(scales)

# Sample data on a copy/paste friendly format
sample_df <- data.frame(
  stringsAsFactors = FALSE,
           Country = c("Algeria","Cabo Verde",
                       "Swaziland","Botswana","Namibia","Sao Tome"),
           percent = c(6.520605e-07,9.423077e-05,
                       0.000488189,0.0004694836,0.003836207,0.08947368)
)

ggplot(sample_df, aes(x = Country, y = percent)) +
    geom_col() +
    scale_y_continuous(labels = percent_format())

Created on 2020-03-19 by the reprex package (v0.3.0.9001)

If you need more specific help, please provide a proper REPRoducible EXample (reprex) illustrating your issue.