-58.48% is the change from 660 to 274
Calculation steps:
[( 274 - 660 ) ÷ 660] x 100 = -58.48%
Formula
Percentage change = [(274 - 660) / 660] x 100
Subtract the new number by the original number
274 - 660 = -386
-386 ÷ 660 = -0.5848484848484848
-0.5848484848484848 x 100 = -58.48%