-87.65% is the change from 591 to 73
Calculation steps:
[( 73 - 591 ) ÷ 591] x 100 = -87.65%
Formula
Percentage change = [(73 - 591) / 591] x 100
Subtract the new number by the original number
73 - 591 = -518
-518 ÷ 591 = -0.8764805414551607
-0.8764805414551607 x 100 = -87.65%