-2.83% is the change from 707 to 687
Calculation steps:
[( 687 - 707 ) ÷ 707] x 100 = -2.83%
Formula
Percentage change = [(687 - 707) / 707] x 100
Subtract the new number by the original number
687 - 707 = -20
-20 ÷ 707 = -0.028288543140028287
-0.028288543140028287 x 100 = -2.83%