-87.69% is the change from 593 to 73
Calculation steps:
[( 73 - 593 ) ÷ 593] x 100 = -87.69%
Formula
Percentage change = [(73 - 593) / 593] x 100
Subtract the new number by the original number
73 - 593 = -520
-520 ÷ 593 = -0.8768971332209107
-0.8768971332209107 x 100 = -87.69%