Relative Improvement Percentage

Problem

The relative improvement from an old value to a new value is (old - new) / old * 100 percent.

Given old and new (old nonzero), return the percentage.

Hint

A larger positive number means a bigger gain.

case 1

in: [100,90]

expected: 10

case 2

in: [2,1]

expected: 50

case 3

in: [50,75]

expected: -50

Starter codePython

def relative_improvement_percentage(old, new):
    # Your code here
    pass

3 test cases · run your code against them in the editor