Percentage Calculator
Tip, discount, % change, and more – instant results with breakdown.
Percent of a Number
20% of 150 = (20/100) × 150 = 30
Percentage Change
Change from 80 to 100 = ((100 - 80) / 80) × 100 = 25% increase
Tip Calculator
Bill $45 × 15% tip → $6.75. Total $51.75 split 2 ways = $25.88 each.
Discount Calculator
25% off $120 = save $30 → final price $90.