-44.56% is the change from 487 to 270
Calculation steps:
[( 270 - 487 ) ÷ 487] x 100 = -44.56%
Formula
Percentage change = [(270 - 487) / 487] x 100
Subtract the new number by the original number
270 - 487 = -217
-217 ÷ 487 = -0.4455852156057495
-0.4455852156057495 x 100 = -44.56%