-93.07% is the change from 577 to 40
Calculation steps:
[( 40 - 577 ) ÷ 577] x 100 = -93.07%
Formula
Percentage change = [(40 - 577) / 577] x 100
Subtract the new number by the original number
40 - 577 = -537
-537 ÷ 577 = -0.9306759098786829
-0.9306759098786829 x 100 = -93.07%