-25.62% is the change from 687 to 511
Calculation steps:
[( 511 - 687 ) ÷ 687] x 100 = -25.62%
Formula
Percentage change = [(511 - 687) / 687] x 100
Subtract the new number by the original number
511 - 687 = -176
-176 ÷ 687 = -0.2561863173216885
-0.2561863173216885 x 100 = -25.62%