round down number

[blackbelt60]

Hello. I need to get the same results I get by running the Excel function floor(number; significance) , round down a number to the closer multiple of the significance value. That is, if I run floor(100000; 12) on Excel I get 99996 , which is the closer integer down, multiple of 12. Sorry I can't find any similar in JavaScript. Thank you. Maurizio

[step]

var number = 100000;
var significance = 12;
return Math.floor(number / significance) * significance;

[blackbelt60]

Thank you very much ! Maurizio