-98.42% is the change from 631 to 10
Calculation steps:
[( 10 - 631 ) ÷ 631] x 100 = -98.42%
Formula
Percentage change = [(10 - 631) / 631] x 100
Subtract the new number by the original number
10 - 631 = -621
-621 ÷ 631 = -0.9841521394611727
-0.9841521394611727 x 100 = -98.42%