-32.21% is the change from 326 to 221
Calculation steps:
[( 221 - 326 ) ÷ 326] x 100 = -32.21%
Formula
Percentage change = [(221 - 326) / 326] x 100
Subtract the new number by the original number
221 - 326 = -105
-105 ÷ 326 = -0.3220858895705521
-0.3220858895705521 x 100 = -32.21%