# Percentage Decrease Calculator

## What does percentage decrease calculator do?

This percentage reduction calculator, calculate the decrease in number 1 to number 2, in terms of percentage.

### Formula for percentage decrease:

Percentage Decrease = 1st value ? 2nd value / 1st Value ? 100

## How to use this percentage decrease calculator?

Enter the 1st value,

Enter the 2nd value,

And the decrease percentage will be shown. Just put both values and result will be on the go.

For example:

You are using a 100-watt traditional light bulb for a lamp in your room. Your lamp bulb uses 100 watts of electricity per hour. You are thinking to replace the lamps bulb with an LED bulb, which consumes 24 watt of electricity per hour. And you want to see how much less energy is LED bulb consuming? Or What is the percentage decrease in electricity consuming? for switching from ordinary light bulb to LED light bulb.

Percentage Decrease = 1st value – 2nd value / 1st Value × 100

100 - 24 = 76

76 / 100 = 0.76

0.76 × 100 = 76%

So, you will be consuming 76% less energy per hour., resulting you cost saving of that percentage reduced in consumption.

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