-9.2% is the change from 728 to 661
Calculation steps:
[( 661 - 728 ) ÷ 728] x 100 = -9.2%
Formula
Percentage change = [(661 - 728) / 728] x 100
Subtract the new number by the original number
661 - 728 = -67
-67 ÷ 728 = -0.09203296703296704
-0.09203296703296704 x 100 = -9.2%