百分比计算器
即时计算百分比、百分比变化和总量的百分比
What is X% of Y? This tool handles all common percentage calculations with high precision.
Result
Equation Used
20 / 100 × 150
Quick Summary
"20% of 150 is equal to 30."
Percentage Calculator
Calculate percentages instantly — find what percent X is of Y, add/subtract a percentage, calculate percentage change, and more. No formula memorization needed.
FAQ
How do I calculate percentage?
Percentage = (Part / Whole) × 100. Example: 25 out of 200 = (25/200) × 100 = 12.5%.
How do I calculate percentage increase?
% increase = ((New − Old) / Old) × 100. If a price went from $50 to $65: ((65−50)/50) × 100 = 30% increase.
What is percentage off?
Multiply the original price by the discount percentage and subtract. $80 at 25% off: 80 × 0.25 = $20 discount → $60 final price.
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