-30.65% is the change from 323 to 224
Calculation steps:
[( 224 - 323 ) ÷ 323] x 100 = -30.65%
Formula
Percentage change = [(224 - 323) / 323] x 100
Subtract the new number by the original number
224 - 323 = -99
-99 ÷ 323 = -0.3065015479876161
-0.3065015479876161 x 100 = -30.65%