-99.53% is the change from 634 to 3
Calculation steps:
[( 3 - 634 ) ÷ 634] x 100 = -99.53%
Formula
Percentage change = [(3 - 634) / 634] x 100
Subtract the new number by the original number
3 - 634 = -631
-631 ÷ 634 = -0.9952681388012619
-0.9952681388012619 x 100 = -99.53%