-42.36% is the change from 687 to 396
Calculation steps:
[( 396 - 687 ) ÷ 687] x 100 = -42.36%
Formula
Percentage change = [(396 - 687) / 687] x 100
Subtract the new number by the original number
396 - 687 = -291
-291 ÷ 687 = -0.42358078602620086
-0.42358078602620086 x 100 = -42.36%