-15.37% is the change from 631 to 534
Calculation steps:
[( 534 - 631 ) ÷ 631] x 100 = -15.37%
Formula
Percentage change = [(534 - 631) / 631] x 100
Subtract the new number by the original number
534 - 631 = -97
-97 ÷ 631 = -0.1537242472266244
-0.1537242472266244 x 100 = -15.37%