-99.52% is the change from 631 to 3
Calculation steps:
[( 3 - 631 ) ÷ 631] x 100 = -99.52%
Formula
Percentage change = [(3 - 631) / 631] x 100
Subtract the new number by the original number
3 - 631 = -628
-628 ÷ 631 = -0.9952456418383518
-0.9952456418383518 x 100 = -99.52%