-46.53% is the change from 851 to 455
Calculation steps:
[( 455 - 851 ) ÷ 851] x 100 = -46.53%
Formula
Percentage change = [(455 - 851) / 851] x 100
Subtract the new number by the original number
455 - 851 = -396
-396 ÷ 851 = -0.46533490011750883
-0.46533490011750883 x 100 = -46.53%