Utilix

Percentage Growth Calculator

Find the percentage change between two values — or apply a % increase or decrease to any number, instantly.

Adjust values
Start value
End value
Percentage increaseLive
+25.00%
1.25× start100 → 125
See full breakdown
Breakdown
Start
100
80.0% of total
Increase
25
20.0% of total

Values at a glance

Start
100
Increase
+25
End
125

From 100 to 125 is a +25.00% change (1.250× the start).

About the % Growth calculator

A free percentage growth calculator. Switch between two modes: find the percentage increase or decrease from a starting value to an ending value, or apply a % change to any starting number to see the new value. Works for sales growth, price changes, statistics, grades and everyday math — no signup, instant results.

How it works

  1. 1
    Pick a mode
    Use Find % when you already know the starting and ending values and want the percentage change. Use Apply % when you have a starting value and a percentage and want the new value.
  2. 2
    Enter your numbers
    Tap any value to type it directly — no upper or lower limits. Use the preset chips below each field for one-tap common values (100, 1K, 1M, ±10%, +25%, +100% and more). Negative percentages model a decrease — e.g. −20% on 200 gives 160.
  3. 3
    Read the headline
    Find % shows the signed percentage change (positive for growth, negative for decline). Apply % shows the resulting end value and the absolute change.
  4. 4
    Check the breakdown
    The split bar visualises the starting value versus the increase or decrease. The values-at-a-glance card shows start, delta and end in one row.

Frequently asked questions

  • Percentage change = ((End − Start) / |Start|) × 100. A positive result is an increase, a negative result is a decrease. Using |Start| as the denominator keeps the sign of the change correct even when the starting value is negative.

  • Percentage increase has a direction — it's relative to the starting value. Percentage difference is symmetric and uses the average of the two values as the denominator, so the order doesn't matter. Most everyday questions (sales growth, price hikes, grade changes) want percentage change, not percentage difference.

  • Yes. In Find % mode, an ending value lower than the start produces a negative result (e.g. 200 → 150 is −25%). In Apply % mode, enter a negative percentage to model a discount or decline (e.g. −15% off 80 = 68).

  • A doubling is a +100% increase (you added 100% of the original on top). +125% means the value grew to 2.25× the starting amount. The multiplier pill makes this explicit so you can sanity-check the result at a glance.

  • Percentage change is undefined when the start is zero (you can't divide by zero). The calculator returns 0% in that case and you should rely on the absolute change instead.

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