-11.5% is the change from 687 to 608
Calculation steps:
[( 608 - 687 ) ÷ 687] x 100 = -11.5%
Formula
Percentage change = [(608 - 687) / 687] x 100
Subtract the new number by the original number
608 - 687 = -79
-79 ÷ 687 = -0.11499272197962154
-0.11499272197962154 x 100 = -11.5%