-11.26% is the change from 728 to 646
Calculation steps:
[( 646 - 728 ) ÷ 728] x 100 = -11.26%
Formula
Percentage change = [(646 - 728) / 728] x 100
Subtract the new number by the original number
646 - 728 = -82
-82 ÷ 728 = -0.11263736263736264
-0.11263736263736264 x 100 = -11.26%