-16.97% is the change from 660 to 548
Calculation steps:
[( 548 - 660 ) ÷ 660] x 100 = -16.97%
Formula
Percentage change = [(548 - 660) / 660] x 100
Subtract the new number by the original number
548 - 660 = -112
-112 ÷ 660 = -0.1696969696969697
-0.1696969696969697 x 100 = -16.97%