-11.65% is the change from 747 to 660
Calculation steps:
[( 660 - 747 ) ÷ 747] x 100 = -11.65%
Formula
Percentage change = [(660 - 747) / 747] x 100
Subtract the new number by the original number
660 - 747 = -87
-87 ÷ 747 = -0.11646586345381527
-0.11646586345381527 x 100 = -11.65%