-18.7% is the change from 631 to 513
Calculation steps:
[( 513 - 631 ) ÷ 631] x 100 = -18.7%
Formula
Percentage change = [(513 - 631) / 631] x 100
Subtract the new number by the original number
513 - 631 = -118
-118 ÷ 631 = -0.18700475435816163
-0.18700475435816163 x 100 = -18.7%