-37.85% is the change from 531 to 330
Calculation steps:
[( 330 - 531 ) ÷ 531] x 100 = -37.85%
Formula
Percentage change = [(330 - 531) / 531] x 100
Subtract the new number by the original number
330 - 531 = -201
-201 ÷ 531 = -0.3785310734463277
-0.3785310734463277 x 100 = -37.85%