-30.43% is the change from 838 to 583
Calculation steps:
[( 583 - 838 ) ÷ 838] x 100 = -30.43%
Formula
Percentage change = [(583 - 838) / 838] x 100
Subtract the new number by the original number
583 - 838 = -255
-255 ÷ 838 = -0.3042959427207637
-0.3042959427207637 x 100 = -30.43%