-48.93% is the change from 840 to 429
Calculation steps:
[( 429 - 840 ) ÷ 840] x 100 = -48.93%
Formula
Percentage change = [(429 - 840) / 840] x 100
Subtract the new number by the original number
429 - 840 = -411
-411 ÷ 840 = -0.48928571428571427
-0.48928571428571427 x 100 = -48.93%