-99.05% is the change from 631 to 6
Calculation steps:
[( 6 - 631 ) ÷ 631] x 100 = -99.05%
Formula
Percentage change = [(6 - 631) / 631] x 100
Subtract the new number by the original number
6 - 631 = -625
-625 ÷ 631 = -0.9904912836767037
-0.9904912836767037 x 100 = -99.05%