How to easily move comma on a long number

Question

I have this number 0.020928116469517644 And I want to get the percentage, e.g. 2% in this case. How can I do this? Thanks in advance.

Multiply a decimal by 100 to get it as a percent. To get a whole number, you can use parseInt() or toFixed() — Seiyria, May 31 '20 at 01:54

score 2 · Answer 1 · answered May 31 '20 at 01:54

2

function percentage(x) {
   return Math.round(100*x) + '%'
}

answer = percentage(0.020928116469517644)

Also note that in this example, the percentage is 2% and not 20%

answered May 31 '20 at 01:54

Catch22

You should accept the answer if its right – Catch22 May 31 '20 at 02:39
Yep, one more question about this, how can I get non-approximated values? – Juan Morelle May 31 '20 at 02:43
Depends on how precise you want it. You can always omit Math.round, but then you will get: 2.0928116469517644% – Catch22 May 31 '20 at 02:46
For example, if you want 2 decimal digits, use: (Math.round( x * 10000 + Number.EPSILON ) / 100) + '%' – Catch22 May 31 '20 at 02:49

1 Answers1