-39.32% is the change from 501 to 304
Calculation steps:
[( 304 - 501 ) ÷ 501] x 100 = -39.32%
Formula
Percentage change = [(304 - 501) / 501] x 100
Subtract the new number by the original number
304 - 501 = -197
-197 ÷ 501 = -0.3932135728542914
-0.3932135728542914 x 100 = -39.32%