-34.66% is the change from 502 to 328
Calculation steps:
[( 328 - 502 ) ÷ 502] x 100 = -34.66%
Formula
Percentage change = [(328 - 502) / 502] x 100
Subtract the new number by the original number
328 - 502 = -174
-174 ÷ 502 = -0.3466135458167331
-0.3466135458167331 x 100 = -34.66%