-91.44% is the change from 631 to 54
Calculation steps:
[( 54 - 631 ) ÷ 631] x 100 = -91.44%
Formula
Percentage change = [(54 - 631) / 631] x 100
Subtract the new number by the original number
54 - 631 = -577
-577 ÷ 631 = -0.9144215530903328
-0.9144215530903328 x 100 = -91.44%