-51.43% is the change from 842 to 409
Calculation steps:
[( 409 - 842 ) ÷ 842] x 100 = -51.43%
Formula
Percentage change = [(409 - 842) / 842] x 100
Subtract the new number by the original number
409 - 842 = -433
-433 ÷ 842 = -0.5142517814726841
-0.5142517814726841 x 100 = -51.43%