-10.19% is the change from 324 to 291
Calculation steps:
[( 291 - 324 ) ÷ 324] x 100 = -10.19%
Formula
Percentage change = [(291 - 324) / 324] x 100
Subtract the new number by the original number
291 - 324 = -33
-33 ÷ 324 = -0.10185185185185185
-0.10185185185185185 x 100 = -10.19%