-91.69% is the change from 638 to 53
Calculation steps:
[( 53 - 638 ) ÷ 638] x 100 = -91.69%
Formula
Percentage change = [(53 - 638) / 638] x 100
Subtract the new number by the original number
53 - 638 = -585
-585 ÷ 638 = -0.9169278996865203
-0.9169278996865203 x 100 = -91.69%