-46.15% is the change from 910 to 490
Calculation steps:
[( 490 - 910 ) ÷ 910] x 100 = -46.15%
Formula
Percentage change = [(490 - 910) / 910] x 100
Subtract the new number by the original number
490 - 910 = -420
-420 ÷ 910 = -0.46153846153846156
-0.46153846153846156 x 100 = -46.15%