-83.3% is the change from 437 to 73
Calculation steps:
[( 73 - 437 ) ÷ 437] x 100 = -83.3%
Formula
Percentage change = [(73 - 437) / 437] x 100
Subtract the new number by the original number
73 - 437 = -364
-364 ÷ 437 = -0.8329519450800915
-0.8329519450800915 x 100 = -83.3%