-43.09% is the change from 564 to 321
Calculation steps:
[( 321 - 564 ) ÷ 564] x 100 = -43.09%
Formula
Percentage change = [(321 - 564) / 564] x 100
Subtract the new number by the original number
321 - 564 = -243
-243 ÷ 564 = -0.4308510638297872
-0.4308510638297872 x 100 = -43.09%