-14.45% is the change from 609 to 521
Calculation steps:
[( 521 - 609 ) ÷ 609] x 100 = -14.45%
Formula
Percentage change = [(521 - 609) / 609] x 100
Subtract the new number by the original number
521 - 609 = -88
-88 ÷ 609 = -0.1444991789819376
-0.1444991789819376 x 100 = -14.45%