-10.84% is the change from 323 to 288
Calculation steps:
[( 288 - 323 ) ÷ 323] x 100 = -10.84%
Formula
Percentage change = [(288 - 323) / 323] x 100
Subtract the new number by the original number
288 - 323 = -35
-35 ÷ 323 = -0.10835913312693499
-0.10835913312693499 x 100 = -10.84%