-35.27% is the change from 499 to 323
Calculation steps:
[( 323 - 499 ) ÷ 499] x 100 = -35.27%
Formula
Percentage change = [(323 - 499) / 499] x 100
Subtract the new number by the original number
323 - 499 = -176
-176 ÷ 499 = -0.3527054108216433
-0.3527054108216433 x 100 = -35.27%