-49.08% is the change from 980 to 499
Calculation steps:
[( 499 - 980 ) ÷ 980] x 100 = -49.08%
Formula
Percentage change = [(499 - 980) / 980] x 100
Subtract the new number by the original number
499 - 980 = -481
-481 ÷ 980 = -0.49081632653061225
-0.49081632653061225 x 100 = -49.08%