-62.92% is the change from 631 to 234
Calculation steps:
[( 234 - 631 ) ÷ 631] x 100 = -62.92%
Formula
Percentage change = [(234 - 631) / 631] x 100
Subtract the new number by the original number
234 - 631 = -397
-397 ÷ 631 = -0.6291600633914421
-0.6291600633914421 x 100 = -62.92%