-42.65% is the change from 687 to 394
Calculation steps:
[( 394 - 687 ) ÷ 687] x 100 = -42.65%
Formula
Percentage change = [(394 - 687) / 687] x 100
Subtract the new number by the original number
394 - 687 = -293
-293 ÷ 687 = -0.4264919941775837
-0.4264919941775837 x 100 = -42.65%