What is [X]% of [Y]?

% of

[X] is what percent of [Y]?

is what % of

Percentage Increase/Decrease

to

Effortlessly Crunch Percentages in Real Time – No Buttons Needed! Even if they’re available.

Say goodbye to manual calculations! Our Smart Percentage Calculator instantly solves three key problems as you type—perfect for discounts, taxes, grades, budgets, or business metrics. Just type, and watch results update live!

How It Works (Zero Clicks Required):

  1. What is [X]% of [Y]?
    • Example: “What is 20% of 250?”∗→Instantlysee∗∗250?”∗→Instantlysee∗∗50* as you type.
  2. [X] is what percent of [Y]?
    • Example: “75 is what % of 150?” → Auto-updates to 50%.
  3. Percentage Increase/Decrease (From X to Y):
    • Example: “Price rose from 80→80→100” → Instantly shows 25% increase.

Why This Tool Stands Out:

Perfect For:

Example Workflow:

  1. Type “30” in the “What is X% of Y?” X-field and “500” in the Y-field → 150 appears instantly.
  2. Compare last month’s sales (1,200)tothismonth’s(1,200)tothismonth’s(1,500) → 25% increase auto-calculates.

From Classroom to Boardroom—Get Percentages Right, Every Time.
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