-74.61% is the change from 638 to 162
Calculation steps:
[( 162 - 638 ) ÷ 638] x 100 = -74.61%
Formula
Percentage change = [(162 - 638) / 638] x 100
Subtract the new number by the original number
162 - 638 = -476
-476 ÷ 638 = -0.7460815047021944
-0.7460815047021944 x 100 = -74.61%