-53.5% is the change from 157 to 73
Calculation steps:
[( 73 - 157 ) ÷ 157] x 100 = -53.5%
Formula
Percentage change = [(73 - 157) / 157] x 100
Subtract the new number by the original number
73 - 157 = -84
-84 ÷ 157 = -0.535031847133758
-0.535031847133758 x 100 = -53.5%