-40% is the change from 930 to 558
Calculation steps:
[( 558 - 930 ) ÷ 930] x 100 = -40%
Formula
Percentage change = [(558 - 930) / 930] x 100
Subtract the new number by the original number
558 - 930 = -372
-372 ÷ 930 = -0.4
-0.4 x 100 = -40%
Example