-39.52% is the change from 501 to 303
Calculation steps:
[( 303 - 501 ) ÷ 501] x 100 = -39.52%
Formula
Percentage change = [(303 - 501) / 501] x 100
Subtract the new number by the original number
303 - 501 = -198
-198 ÷ 501 = -0.39520958083832336
-0.39520958083832336 x 100 = -39.52%