-17.92% is the change from 837 to 687
Calculation steps:
[( 687 - 837 ) ÷ 837] x 100 = -17.92%
Formula
Percentage change = [(687 - 837) / 837] x 100
Subtract the new number by the original number
687 - 837 = -150
-150 ÷ 837 = -0.17921146953405018
-0.17921146953405018 x 100 = -17.92%