-86.99% is the change from 561 to 73
Calculation steps:
[( 73 - 561 ) ÷ 561] x 100 = -86.99%
Formula
Percentage change = [(73 - 561) / 561] x 100
Subtract the new number by the original number
73 - 561 = -488
-488 ÷ 561 = -0.8698752228163993
-0.8698752228163993 x 100 = -86.99%