-49.34% is the change from 687 to 348
Calculation steps:
[( 348 - 687 ) ÷ 687] x 100 = -49.34%
Formula
Percentage change = [(348 - 687) / 687] x 100
Subtract the new number by the original number
348 - 687 = -339
-339 ÷ 687 = -0.49344978165938863
-0.49344978165938863 x 100 = -49.34%