-8.77% is the change from 798 to 728
Calculation steps:
[( 728 - 798 ) ÷ 798] x 100 = -8.77%
Formula
Percentage change = [(728 - 798) / 798] x 100
Subtract the new number by the original number
728 - 798 = -70
-70 ÷ 798 = -0.08771929824561403
-0.08771929824561403 x 100 = -8.77%