Percentage Calculator

Calculate percentages, discounts, and percentage changes.

10 views

0 uses

Added 8/14/2025

Percentage Calculator

📊 Calculate Percentage

Percentage (%)

Number

📈 Common Percentage Calculations

Business & Finance

Sales tax (8.5%)$8.50 on $100

Discount (20%)$20 off $100

Tip (15%)$15 on $100

Interest (5% annual)$5 on $100

Commission (10%)$10 on $100 sale

Academic & Grades

90% = A grade90/100 points

80% = B grade80/100 points

70% = C grade70/100 points

60% = D grade60/100 points

Below 60% = F<60/100 points

💡 Percentage Calculation Tips

• To find X% of a number, multiply the number by X/100
• To increase a number by X%, multiply by (1 + X/100)
• To decrease a number by X%, multiply by (1 - X/100)
• Percentage change = ((New - Old) / Old) × 100
• Always double-check your calculations for accuracy

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Percentage Calculator

Calculate percentages, discounts, and percentage changes.

10 views

0 uses

Added 8/14/2025

Percentage Calculator

📊 Calculate Percentage

Percentage (%)

Number

📈 Common Percentage Calculations

Business & Finance

Sales tax (8.5%)$8.50 on $100

Discount (20%)$20 off $100

Tip (15%)$15 on $100

Interest (5% annual)$5 on $100

Commission (10%)$10 on $100 sale

Academic & Grades

90% = A grade90/100 points

80% = B grade80/100 points

70% = C grade70/100 points

60% = D grade60/100 points

Below 60% = F<60/100 points

💡 Percentage Calculation Tips

• To find X% of a number, multiply the number by X/100
• To increase a number by X%, multiply by (1 + X/100)
• To decrease a number by X%, multiply by (1 - X/100)
• Percentage change = ((New - Old) / Old) × 100
• Always double-check your calculations for accuracy