-40.86% is the change from 837 to 495
Calculation steps:
[( 495 - 837 ) ÷ 837] x 100 = -40.86%
Formula
Percentage change = [(495 - 837) / 837] x 100
Subtract the new number by the original number
495 - 837 = -342
-342 ÷ 837 = -0.40860215053763443
-0.40860215053763443 x 100 = -40.86%