-91.21% is the change from 728 to 64
Calculation steps:
[( 64 - 728 ) ÷ 728] x 100 = -91.21%
Formula
Percentage change = [(64 - 728) / 728] x 100
Subtract the new number by the original number
64 - 728 = -664
-664 ÷ 728 = -0.9120879120879121
-0.9120879120879121 x 100 = -91.21%