-18.7% is the change from 845 to 687
Calculation steps:
[( 687 - 845 ) ÷ 845] x 100 = -18.7%
Formula
Percentage change = [(687 - 845) / 845] x 100
Subtract the new number by the original number
687 - 845 = -158
-158 ÷ 845 = -0.18698224852071005
-0.18698224852071005 x 100 = -18.7%