-12.55% is the change from 502 to 439
Calculation steps:
[( 439 - 502 ) ÷ 502] x 100 = -12.55%
Formula
Percentage change = [(439 - 502) / 502] x 100
Subtract the new number by the original number
439 - 502 = -63
-63 ÷ 502 = -0.1254980079681275
-0.1254980079681275 x 100 = -12.55%