-39.59% is the change from 687 to 415
Calculation steps:
[( 415 - 687 ) ÷ 687] x 100 = -39.59%
Formula
Percentage change = [(415 - 687) / 687] x 100
Subtract the new number by the original number
415 - 687 = -272
-272 ÷ 687 = -0.39592430858806404
-0.39592430858806404 x 100 = -39.59%