-8.47% is the change from 531 to 486
Calculation steps:
[( 486 - 531 ) ÷ 531] x 100 = -8.47%
Formula
Percentage change = [(486 - 531) / 531] x 100
Subtract the new number by the original number
486 - 531 = -45
-45 ÷ 531 = -0.0847457627118644
-0.0847457627118644 x 100 = -8.47%