-49.7% is the change from 823 to 414
Calculation steps:
[( 414 - 823 ) ÷ 823] x 100 = -49.7%
Formula
Percentage change = [(414 - 823) / 823] x 100
Subtract the new number by the original number
414 - 823 = -409
-409 ÷ 823 = -0.49696233292831105
-0.49696233292831105 x 100 = -49.7%