-80.03% is the change from 631 to 126
Calculation steps:
[( 126 - 631 ) ÷ 631] x 100 = -80.03%
Formula
Percentage change = [(126 - 631) / 631] x 100
Subtract the new number by the original number
126 - 631 = -505
-505 ÷ 631 = -0.8003169572107766
-0.8003169572107766 x 100 = -80.03%