-51.61% is the change from 837 to 405
Calculation steps:
[( 405 - 837 ) ÷ 837] x 100 = -51.61%
Formula
Percentage change = [(405 - 837) / 837] x 100
Subtract the new number by the original number
405 - 837 = -432
-432 ÷ 837 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%