-63.46% is the change from 687 to 251
Calculation steps:
[( 251 - 687 ) ÷ 687] x 100 = -63.46%
Formula
Percentage change = [(251 - 687) / 687] x 100
Subtract the new number by the original number
251 - 687 = -436
-436 ÷ 687 = -0.6346433770014556
-0.6346433770014556 x 100 = -63.46%