-93.12% is the change from 581 to 40
Calculation steps:
[( 40 - 581 ) ÷ 581] x 100 = -93.12%
Formula
Percentage change = [(40 - 581) / 581] x 100
Subtract the new number by the original number
40 - 581 = -541
-541 ÷ 581 = -0.9311531841652324
-0.9311531841652324 x 100 = -93.12%