-93.87% is the change from 685 to 42
Calculation steps:
[( 42 - 685 ) ÷ 685] x 100 = -93.87%
Formula
Percentage change = [(42 - 685) / 685] x 100
Subtract the new number by the original number
42 - 685 = -643
-643 ÷ 685 = -0.9386861313868613
-0.9386861313868613 x 100 = -93.87%