-18.02% is the change from 838 to 687
Calculation steps:
[( 687 - 838 ) ÷ 838] x 100 = -18.02%
Formula
Percentage change = [(687 - 838) / 838] x 100
Subtract the new number by the original number
687 - 838 = -151
-151 ÷ 838 = -0.1801909307875895
-0.1801909307875895 x 100 = -18.02%