-7.53% is the change from 531 to 491
Calculation steps:
[( 491 - 531 ) ÷ 531] x 100 = -7.53%
Formula
Percentage change = [(491 - 531) / 531] x 100
Subtract the new number by the original number
491 - 531 = -40
-40 ÷ 531 = -0.07532956685499058
-0.07532956685499058 x 100 = -7.53%