-51.49% is the change from 837 to 406
Calculation steps:
[( 406 - 837 ) ÷ 837] x 100 = -51.49%
Formula
Percentage change = [(406 - 837) / 837] x 100
Subtract the new number by the original number
406 - 837 = -431
-431 ÷ 837 = -0.5149342891278376
-0.5149342891278376 x 100 = -51.49%