-21.98% is the change from 323 to 252
Calculation steps:
[( 252 - 323 ) ÷ 323] x 100 = -21.98%
Formula
Percentage change = [(252 - 323) / 323] x 100
Subtract the new number by the original number
252 - 323 = -71
-71 ÷ 323 = -0.21981424148606812
-0.21981424148606812 x 100 = -21.98%