-45.4% is the change from 837 to 457
Calculation steps:
[( 457 - 837 ) ÷ 837] x 100 = -45.4%
Formula
Percentage change = [(457 - 837) / 837] x 100
Subtract the new number by the original number
457 - 837 = -380
-380 ÷ 837 = -0.4540023894862604
-0.4540023894862604 x 100 = -45.4%