Percentage Increase Calculator

Find the percentage increase between an old value and a new, larger value.

Percentage Increase Calculator

Find the percentage increase between an old value and a new, larger value.

Starting value

Ending value

Enter values above and click Calculate — results will appear here with the formula explained.

increase % = ((new − original) ÷ |original|) × 100

How does this work?

Percentage increase measures growth relative to where you started. Subtract the original value from the new value, divide by the original value, and multiply by 100.

Dividing by the original value matters because the same absolute change represents very different growth: rising from 50 to 75 is a 50% increase, while rising from 500 to 525 is only a 5% increase even though both grew by 25 units.

AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID

728×90 — AdSense

Quick Answer

Percentage Increase Calculator computes find the percentage increase between an old value and a new, larger value. Formula: increase % = ((new − original) ÷ |original|) × 100. Example: A salary rises from $52,000 to $57,200.

How to Use This Calculator

1Enter the original (smaller) value in the first field.
2Enter the new (larger) value in the second field.
3Read the percentage increase — the tool flags negative results as decreases automatically.

Formula Used

increase % = ((new − original) ÷ |original|) × 100

Percentage increase measures growth relative to where you started. Subtract the original value from the new value, divide by the original value, and multiply by 100.

AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID

728×90 — AdSense

Worked Example

A salary rises from $52,000 to $57,200. The difference is $5,200 and 5,200 ÷ 52,000 = 0.1, so the raise is exactly 10%.

AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID

728×90 — AdSense

Related Calculators

Percentage Decrease Calculator

Find the percentage decrease between an old value and a new, smaller value.

Percentage Calculator

Calculate what X% of Y equals, and see the value after adding or removing that percentage.

Pay Raise Calculator

See the effect of a raise — as a percentage or a dollar amount — on every pay period.

Revenue Growth Calculator

Measure period-over-period revenue growth as a percentage and absolute change.

Frequently Asked Questions

QHow do I calculate percentage increase?

Subtract the old value from the new one, divide by the old value, and multiply by 100. Example: from 80 to 100 is (100 − 80) ÷ 80 × 100 = 25%.

QWhat if my value went down instead of up?

The formula returns a negative number, which the calculator labels as a decrease. For a positive 'decrease percentage' figure, use the percentage decrease calculator.

QWhy divide by the original value and not the new one?

Percentage change is always measured against the baseline you started from. Dividing by the new value gives a different metric sometimes called 'percent off' in reverse contexts.

Formula Used

increase % = ((new − original) ÷ |original|) × 100

Percentage increase measures growth relative to where you started. Subtract the original value from the new value, divide by the original value, and multiply by 100.

Frequently Asked Questions

QHow do I calculate percentage increase?

Subtract the old value from the new one, divide by the old value, and multiply by 100. Example: from 80 to 100 is (100 − 80) ÷ 80 × 100 = 25%.

QWhat if my value went down instead of up?

The formula returns a negative number, which the calculator labels as a decrease. For a positive 'decrease percentage' figure, use the percentage decrease calculator.

QWhy divide by the original value and not the new one?

Percentage change is always measured against the baseline you started from. Dividing by the new value gives a different metric sometimes called 'percent off' in reverse contexts.