-99.25% is the change from 531 to 4
Calculation steps:
[( 4 - 531 ) ÷ 531] x 100 = -99.25%
Formula
Percentage change = [(4 - 531) / 531] x 100
Subtract the new number by the original number
4 - 531 = -527
-527 ÷ 531 = -0.992467043314501
-0.992467043314501 x 100 = -99.25%