-35.66% is the change from 502 to 323
Calculation steps:
[( 323 - 502 ) ÷ 502] x 100 = -35.66%
Formula
Percentage change = [(323 - 502) / 502] x 100
Subtract the new number by the original number
323 - 502 = -179
-179 ÷ 502 = -0.3565737051792829
-0.3565737051792829 x 100 = -35.66%