-93.54% is the change from 619 to 40
Calculation steps:
[( 40 - 619 ) ÷ 619] x 100 = -93.54%
Formula
Percentage change = [(40 - 619) / 619] x 100
Subtract the new number by the original number
40 - 619 = -579
-579 ÷ 619 = -0.9353796445880452
-0.9353796445880452 x 100 = -93.54%