-39.06% is the change from 530 to 323
Calculation steps:
[( 323 - 530 ) ÷ 530] x 100 = -39.06%
Formula
Percentage change = [(323 - 530) / 530] x 100
Subtract the new number by the original number
323 - 530 = -207
-207 ÷ 530 = -0.3905660377358491
-0.3905660377358491 x 100 = -39.06%