-15.37% is the change from 501 to 424
Calculation steps:
[( 424 - 501 ) ÷ 501] x 100 = -15.37%
Formula
Percentage change = [(424 - 501) / 501] x 100
Subtract the new number by the original number
424 - 501 = -77
-77 ÷ 501 = -0.1536926147704591
-0.1536926147704591 x 100 = -15.37%