-99.05% is the change from 634 to 6
Calculation steps:
[( 6 - 634 ) ÷ 634] x 100 = -99.05%
Formula
Percentage change = [(6 - 634) / 634] x 100
Subtract the new number by the original number
6 - 634 = -628
-628 ÷ 634 = -0.9905362776025236
-0.9905362776025236 x 100 = -99.05%