-85.42% is the change from 487 to 71
Calculation steps:
[( 71 - 487 ) ÷ 487] x 100 = -85.42%
Formula
Percentage change = [(71 - 487) / 487] x 100
Subtract the new number by the original number
71 - 487 = -416
-416 ÷ 487 = -0.8542094455852156
-0.8542094455852156 x 100 = -85.42%