-24.31% is the change from 687 to 520
Calculation steps:
[( 520 - 687 ) ÷ 687] x 100 = -24.31%
Formula
Percentage change = [(520 - 687) / 687] x 100
Subtract the new number by the original number
520 - 687 = -167
-167 ÷ 687 = -0.2430858806404658
-0.2430858806404658 x 100 = -24.31%