-21.04% is the change from 499 to 394
Calculation steps:
[( 394 - 499 ) ÷ 499] x 100 = -21.04%
Formula
Percentage change = [(394 - 499) / 499] x 100
Subtract the new number by the original number
394 - 499 = -105
-105 ÷ 499 = -0.21042084168336672
-0.21042084168336672 x 100 = -21.04%