-59.53% is the change from 687 to 278
Calculation steps:
[( 278 - 687 ) ÷ 687] x 100 = -59.53%
Formula
Percentage change = [(278 - 687) / 687] x 100
Subtract the new number by the original number
278 - 687 = -409
-409 ÷ 687 = -0.5953420669577875
-0.5953420669577875 x 100 = -59.53%