-99.37% is the change from 634 to 4
Calculation steps:
[( 4 - 634 ) ÷ 634] x 100 = -99.37%
Formula
Percentage change = [(4 - 634) / 634] x 100
Subtract the new number by the original number
4 - 634 = -630
-630 ÷ 634 = -0.9936908517350158
-0.9936908517350158 x 100 = -99.37%