-48.91% is the change from 687 to 351
Calculation steps:
[( 351 - 687 ) ÷ 687] x 100 = -48.91%
Formula
Percentage change = [(351 - 687) / 687] x 100
Subtract the new number by the original number
351 - 687 = -336
-336 ÷ 687 = -0.4890829694323144
-0.4890829694323144 x 100 = -48.91%