Simple Price Index
Definition
Simple Price Index measures the change in price of a commodity in the current period compared to its price in a base period. It shows how much prices have increased or decreased over time.
Formula
Simple Price Index (SPI) = (Current Price ÷ Base Period Price) × 100
Calculator
SPI = 100 → No price change | SPI > 100 → Price increase | SPI < 100 → Price decrease
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