-75.63% is the change from 673 to 164
Calculation steps:
[( 164 - 673 ) ÷ 673] x 100 = -75.63%
Formula
Percentage change = [(164 - 673) / 673] x 100
Subtract the new number by the original number
164 - 673 = -509
-509 ÷ 673 = -0.7563150074294205
-0.7563150074294205 x 100 = -75.63%