-17.27% is the change from 660 to 546
Calculation steps:
[( 546 - 660 ) ÷ 660] x 100 = -17.27%
Formula
Percentage change = [(546 - 660) / 660] x 100
Subtract the new number by the original number
546 - 660 = -114
-114 ÷ 660 = -0.17272727272727273
-0.17272727272727273 x 100 = -17.27%