-74.77% is the change from 642 to 162
Calculation steps:
[( 162 - 642 ) ÷ 642] x 100 = -74.77%
Formula
Percentage change = [(162 - 642) / 642] x 100
Subtract the new number by the original number
162 - 642 = -480
-480 ÷ 642 = -0.7476635514018691
-0.7476635514018691 x 100 = -74.77%