-47.87% is the change from 823 to 429
Calculation steps:
[( 429 - 823 ) ÷ 823] x 100 = -47.87%
Formula
Percentage change = [(429 - 823) / 823] x 100
Subtract the new number by the original number
429 - 823 = -394
-394 ÷ 823 = -0.4787363304981774
-0.4787363304981774 x 100 = -47.87%