Utility tool
Percentage Calculator Suite
Calculate percentages, comparisons, reverse percentages, compound growth, margins, markups, targets and reporting breakdowns from one MOT Juice Labs workspace.
1) What is X% of N?
Formula: (X ÷ 100) × N
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Enter values to calculate.
2) A is what percent of B?
Formula: (A ÷ B) × 100
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Enter values to calculate.
3) Percent change (Old → New)
Default formula: ((New − Old) ÷ |Old|) × 100
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Enter values to calculate.
4) Add or subtract a percent
Formula: N × (1 ± X/100)
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Enter values to calculate.
5) Reverse percentage (find the original)
Example: “Final is after a 20% discount” → find original.
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Enter values to calculate.
Uses: Original = F ÷ (1 ± X/100). Discount uses “−”, increase uses “+”.
6) Percentage difference (symmetric)
Formula: |A − B| ÷ ((|A| + |B|)/2) × 100
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Enter values to calculate.
This avoids “choosing a baseline” like percent change does.
7) Compound growth & CAGR
Finance / inflation / growth scenarios.
A) Final value from rate + years
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Enter values to calculate.
B) CAGR (rate from start + final + years)
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Enter values to calculate.
Assumes annual compounding: Final = P(1 + r)^n and r = (F/P)^(1/n) − 1.
8) Margin vs markup
Given cost + selling price, compute profit, margin, and markup.
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Enter values to calculate.
Margin = Profit ÷ Price. Markup = Profit ÷ Cost.
9) Target value to be X% higher/lower
Formula: Target = Base × (1 ± X/100)
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Enter values to calculate.
10) Percentage of total (breakdown)
Enter multiple values and see each one’s share of the total.
Label
Value
% of total
Total: —
Add a few rows to calculate percentages.
Tip: leaving labels blank is fine. Values can be decimals. Total of 0 means percentages are undefined.