-25.76% is the change from 687 to 510
Calculation steps:
[( 510 - 687 ) ÷ 687] x 100 = -25.76%
Formula
Percentage change = [(510 - 687) / 687] x 100
Subtract the new number by the original number
510 - 687 = -177
-177 ÷ 687 = -0.2576419213973799
-0.2576419213973799 x 100 = -25.76%