-71.46% is the change from 487 to 139
Calculation steps:
[( 139 - 487 ) ÷ 487] x 100 = -71.46%
Formula
Percentage change = [(139 - 487) / 487] x 100
Subtract the new number by the original number
139 - 487 = -348
-348 ÷ 487 = -0.7145790554414785
-0.7145790554414785 x 100 = -71.46%