-81.66% is the change from 687 to 126
Calculation steps:
[( 126 - 687 ) ÷ 687] x 100 = -81.66%
Formula
Percentage change = [(126 - 687) / 687] x 100
Subtract the new number by the original number
126 - 687 = -561
-561 ÷ 687 = -0.8165938864628821
-0.8165938864628821 x 100 = -81.66%