-42.16% is the change from 529 to 306
Calculation steps:
[( 306 - 529 ) ÷ 529] x 100 = -42.16%
Formula
Percentage change = [(306 - 529) / 529] x 100
Subtract the new number by the original number
306 - 529 = -223
-223 ÷ 529 = -0.4215500945179584
-0.4215500945179584 x 100 = -42.16%