-50.36% is the change from 834 to 414
Calculation steps:
[( 414 - 834 ) ÷ 834] x 100 = -50.36%
Formula
Percentage change = [(414 - 834) / 834] x 100
Subtract the new number by the original number
414 - 834 = -420
-420 ÷ 834 = -0.5035971223021583
-0.5035971223021583 x 100 = -50.36%