-87.35% is the change from 577 to 73
Calculation steps:
[( 73 - 577 ) ÷ 577] x 100 = -87.35%
Formula
Percentage change = [(73 - 577) / 577] x 100
Subtract the new number by the original number
73 - 577 = -504
-504 ÷ 577 = -0.8734835355285961
-0.8734835355285961 x 100 = -87.35%