-48.66% is the change from 931 to 478
Calculation steps:
[( 478 - 931 ) ÷ 931] x 100 = -48.66%
Formula
Percentage change = [(478 - 931) / 931] x 100
Subtract the new number by the original number
478 - 931 = -453
-453 ÷ 931 = -0.4865735767991407
-0.4865735767991407 x 100 = -48.66%