Regex for Percentage Value

javascript

const regex = /^-?\d+(?:\.\d+)?%$/;
const isValid = regex.test(value);

python

import re
pattern = r'^-?\d+(?:\.\d+)?%$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^-?\d+(?:\.\d+)?%$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^-?\d+(?:\.\d+)?%$/', $value)) {
    echo "valid";
}

java

String pattern = "^-?\\d+(?:\\.\\d+)?%$";
boolean isValid = value.matches(pattern);