-17.47% is the change from 664 to 548
Calculation steps:
[( 548 - 664 ) ÷ 664] x 100 = -17.47%
Formula
Percentage change = [(548 - 664) / 664] x 100
Subtract the new number by the original number
548 - 664 = -116
-116 ÷ 664 = -0.1746987951807229
-0.1746987951807229 x 100 = -17.47%