-97.26% is the change from 548 to 15
Calculation steps:
[( 15 - 548 ) ÷ 548] x 100 = -97.26%
Formula
Percentage change = [(15 - 548) / 548] x 100
Subtract the new number by the original number
15 - 548 = -533
-533 ÷ 548 = -0.9726277372262774
-0.9726277372262774 x 100 = -97.26%