-88.28% is the change from 623 to 73
Calculation steps:
[( 73 - 623 ) ÷ 623] x 100 = -88.28%
Formula
Percentage change = [(73 - 623) / 623] x 100
Subtract the new number by the original number
73 - 623 = -550
-550 ÷ 623 = -0.8828250401284109
-0.8828250401284109 x 100 = -88.28%