-21.14% is the change from 492 to 388
Calculation steps:
[( 388 - 492 ) ÷ 492] x 100 = -21.14%
Formula
Percentage change = [(388 - 492) / 492] x 100
Subtract the new number by the original number
388 - 492 = -104
-104 ÷ 492 = -0.21138211382113822
-0.21138211382113822 x 100 = -21.14%