-32.47% is the change from 502 to 339
Calculation steps:
[( 339 - 502 ) ÷ 502] x 100 = -32.47%
Formula
Percentage change = [(339 - 502) / 502] x 100
Subtract the new number by the original number
339 - 502 = -163
-163 ÷ 502 = -0.3247011952191235
-0.3247011952191235 x 100 = -32.47%