-45.48% is the change from 840 to 458
Calculation steps:
[( 458 - 840 ) ÷ 840] x 100 = -45.48%
Formula
Percentage change = [(458 - 840) / 840] x 100
Subtract the new number by the original number
458 - 840 = -382
-382 ÷ 840 = -0.45476190476190476
-0.45476190476190476 x 100 = -45.48%