-80.65% is the change from 677 to 131
Calculation steps:
[( 131 - 677 ) ÷ 677] x 100 = -80.65%
Formula
Percentage change = [(131 - 677) / 677] x 100
Subtract the new number by the original number
131 - 677 = -546
-546 ÷ 677 = -0.8064992614475628
-0.8064992614475628 x 100 = -80.65%