-42.65% is the change from 558 to 320
Calculation steps:
[( 320 - 558 ) ÷ 558] x 100 = -42.65%
Formula
Percentage change = [(320 - 558) / 558] x 100
Subtract the new number by the original number
320 - 558 = -238
-238 ÷ 558 = -0.4265232974910394
-0.4265232974910394 x 100 = -42.65%