-99.24% is the change from 525 to 4
Calculation steps:
[( 4 - 525 ) ÷ 525] x 100 = -99.24%
Formula
Percentage change = [(4 - 525) / 525] x 100
Subtract the new number by the original number
4 - 525 = -521
-521 ÷ 525 = -0.9923809523809524
-0.9923809523809524 x 100 = -99.24%