-90.87% is the change from 723 to 66
Calculation steps:
[( 66 - 723 ) ÷ 723] x 100 = -90.87%
Formula
Percentage change = [(66 - 723) / 723] x 100
Subtract the new number by the original number
66 - 723 = -657
-657 ÷ 723 = -0.9087136929460581
-0.9087136929460581 x 100 = -90.87%