-3.97% is the change from 529 to 508
Calculation steps:
[( 508 - 529 ) ÷ 529] x 100 = -3.97%
Formula
Percentage change = [(508 - 529) / 529] x 100
Subtract the new number by the original number
508 - 529 = -21
-21 ÷ 529 = -0.03969754253308128
-0.03969754253308128 x 100 = -3.97%