Syntax
Number.RoundDown(number as nullable number, optional digits as nullable number) as nullable number
Description
Returns the result of rounding number down to the previous highest integer. If number is null, Number.RoundDown returns null. If digits is specified, number is rounded to the digits number of decimal digits.
Reference Data
https://docs.microsoft.com/en-us/powerquery-m/power-query-m-function-reference