-88.89% is the change from 657 to 73
Calculation steps:
[( 73 - 657 ) ÷ 657] x 100 = -88.89%
Formula
Percentage change = [(73 - 657) / 657] x 100
Subtract the new number by the original number
73 - 657 = -584
-584 ÷ 657 = -0.8888888888888888
-0.8888888888888888 x 100 = -88.89%