-75% is the change from 492 to 123
Calculation steps:
[( 123 - 492 ) ÷ 492] x 100 = -75%
Formula
Percentage change = [(123 - 492) / 492] x 100
Subtract the new number by the original number
123 - 492 = -369
-369 ÷ 492 = -0.75
-0.75 x 100 = -75%
Example