-15.43% is the change from 648 to 548
Calculation steps:
[( 548 - 648 ) ÷ 648] x 100 = -15.43%
Formula
Percentage change = [(548 - 648) / 648] x 100
Subtract the new number by the original number
548 - 648 = -100
-100 ÷ 648 = -0.15432098765432098
-0.15432098765432098 x 100 = -15.43%