How to calculate percentage reduction from insurance premium change?

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My insurance premium went down from $ to $ .
By what percentage was it reduced?

Type of calculation: Calculating percentage decrease.
How to use the calculator: Use the Percentage Change CALCULATOR ("What is the percentage change from the Original value to the New value?"). Enter the old specific premium 600 [Original] and the new one 540 [New]. It will show the percentage drop.
The formula:
We want the percentage change from $600 down to $540.
Percentage change = (($540 - $600) / $600) × 100% = ($-60 / $600) × 100% = -0.1 × 100% = -10% (minus confirms the decrease)
Incomplete data. Enter all required values to see the calculations.

Answer: My premium went down by %.

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