-31.29% is the change from 997 to 685
Calculation steps:
[( 685 - 997 ) ÷ 997] x 100 = -31.29%
Formula
Percentage change = [(685 - 997) / 997] x 100
Subtract the new number by the original number
685 - 997 = -312
-312 ÷ 997 = -0.31293881644934807
-0.31293881644934807 x 100 = -31.29%