-54.09% is the change from 159 to 73
Calculation steps:
[( 73 - 159 ) ÷ 159] x 100 = -54.09%
Formula
Percentage change = [(73 - 159) / 159] x 100
Subtract the new number by the original number
73 - 159 = -86
-86 ÷ 159 = -0.5408805031446541
-0.5408805031446541 x 100 = -54.09%