-15.14% is the change from 634 to 538
Calculation steps:
[( 538 - 634 ) ÷ 634] x 100 = -15.14%
Formula
Percentage change = [(538 - 634) / 634] x 100
Subtract the new number by the original number
538 - 634 = -96
-96 ÷ 634 = -0.15141955835962145
-0.15141955835962145 x 100 = -15.14%