-32.49% is the change from 591 to 399
Calculation steps:
[( 399 - 591 ) ÷ 591] x 100 = -32.49%
Formula
Percentage change = [(399 - 591) / 591] x 100
Subtract the new number by the original number
399 - 591 = -192
-192 ÷ 591 = -0.3248730964467005
-0.3248730964467005 x 100 = -32.49%