-37.74% is the change from 530 to 330
Calculation steps:
[( 330 - 530 ) ÷ 530] x 100 = -37.74%
Formula
Percentage change = [(330 - 530) / 530] x 100
Subtract the new number by the original number
330 - 530 = -200
-200 ÷ 530 = -0.37735849056603776
-0.37735849056603776 x 100 = -37.74%