-9.31% is the change from 548 to 497
Calculation steps:
[( 497 - 548 ) ÷ 548] x 100 = -9.31%
Formula
Percentage change = [(497 - 548) / 548] x 100
Subtract the new number by the original number
497 - 548 = -51
-51 ÷ 548 = -0.09306569343065693
-0.09306569343065693 x 100 = -9.31%