-47.69% is the change from 931 to 487
Calculation steps:
[( 487 - 931 ) ÷ 931] x 100 = -47.69%
Formula
Percentage change = [(487 - 931) / 931] x 100
Subtract the new number by the original number
487 - 931 = -444
-444 ÷ 931 = -0.47690655209452204
-0.47690655209452204 x 100 = -47.69%