-95.47% is the change from 685 to 31
Calculation steps:
[( 31 - 685 ) ÷ 685] x 100 = -95.47%
Formula
Percentage change = [(31 - 685) / 685] x 100
Subtract the new number by the original number
31 - 685 = -654
-654 ÷ 685 = -0.9547445255474453
-0.9547445255474453 x 100 = -95.47%