-38.24% is the change from 842 to 520
Calculation steps:
[( 520 - 842 ) ÷ 842] x 100 = -38.24%
Formula
Percentage change = [(520 - 842) / 842] x 100
Subtract the new number by the original number
520 - 842 = -322
-322 ÷ 842 = -0.3824228028503563
-0.3824228028503563 x 100 = -38.24%