-30.4% is the change from 987 to 687
Calculation steps:
[( 687 - 987 ) ÷ 987] x 100 = -30.4%
Formula
Percentage change = [(687 - 987) / 987] x 100
Subtract the new number by the original number
687 - 987 = -300
-300 ÷ 987 = -0.303951367781155
-0.303951367781155 x 100 = -30.4%