-51.85% is the change from 837 to 403
Calculation steps:
[( 403 - 837 ) ÷ 837] x 100 = -51.85%
Formula
Percentage change = [(403 - 837) / 837] x 100
Subtract the new number by the original number
403 - 837 = -434
-434 ÷ 837 = -0.5185185185185185
-0.5185185185185185 x 100 = -51.85%