-91.02% is the change from 323 to 29
Calculation steps:
[( 29 - 323 ) ÷ 323] x 100 = -91.02%
Formula
Percentage change = [(29 - 323) / 323] x 100
Subtract the new number by the original number
29 - 323 = -294
-294 ÷ 323 = -0.9102167182662538
-0.9102167182662538 x 100 = -91.02%