-74.9% is the change from 490 to 123
Calculation steps:
[( 123 - 490 ) ÷ 490] x 100 = -74.9%
Formula
Percentage change = [(123 - 490) / 490] x 100
Subtract the new number by the original number
123 - 490 = -367
-367 ÷ 490 = -0.7489795918367347
-0.7489795918367347 x 100 = -74.9%