-85.01% is the change from 487 to 73
Calculation steps:
[( 73 - 487 ) ÷ 487] x 100 = -85.01%
Formula
Percentage change = [(73 - 487) / 487] x 100
Subtract the new number by the original number
73 - 487 = -414
-414 ÷ 487 = -0.8501026694045175
-0.8501026694045175 x 100 = -85.01%