[SOLVED] Code Compression Ratio Calculator

Question

Code Compression Ratio Calculator
I'm working on HTML, CSS, JS Minifier tools and I need to calculate the compression ratio depending upon the size of input and output. code. how can I do that.
Eg:
input size = 20KB
output size = 10KB
compression: 50%
input size = 20KB
output size = 20KB
compression: 0
input size = 20KB
output size = 30KB
expansion: 50%
https://code.sololearn.com/WL7orjUr68Wu/?ref=app

Answer 1

The calculation should be adjusted as shown below:
From
cr = outputSize / inputSize * 100
To
cr = (1 - outputSize / inputSize) * 100