-46.3% is the change from 851 to 457
Calculation steps:
[( 457 - 851 ) ÷ 851] x 100 = -46.3%
Formula
Percentage change = [(457 - 851) / 851] x 100
Subtract the new number by the original number
457 - 851 = -394
-394 ÷ 851 = -0.46298472385428907
-0.46298472385428907 x 100 = -46.3%