How to find subtract the values corresponding to previous date from the next date in R

Question

The data frame is arranged by date. I want to subtract the values on the previous date from the ones on the next date and display them.

user_3732271 · Answer

An option would be

library(dplyr)
df1 %>%
   mutate_if(is.numeric, list( ~ . - lag(.)))

Or with diff

df1 %>%
   mutate_if(is.numeric, list(~ c(NA, diff(.))))