-74.81% is the change from 643 to 162
Calculation steps:
[( 162 - 643 ) ÷ 643] x 100 = -74.81%
Formula
Percentage change = [(162 - 643) / 643] x 100
Subtract the new number by the original number
162 - 643 = -481
-481 ÷ 643 = -0.7480559875583204
-0.7480559875583204 x 100 = -74.81%