-43.52% is the change from 687 to 388
Calculation steps:
[( 388 - 687 ) ÷ 687] x 100 = -43.52%
Formula
Percentage change = [(388 - 687) / 687] x 100
Subtract the new number by the original number
388 - 687 = -299
-299 ÷ 687 = -0.43522561863173215
-0.43522561863173215 x 100 = -43.52%