-58.24% is the change from 819 to 342
Calculation steps:
[( 342 - 819 ) ÷ 819] x 100 = -58.24%
Formula
Percentage change = [(342 - 819) / 819] x 100
Subtract the new number by the original number
342 - 819 = -477
-477 ÷ 819 = -0.5824175824175825
-0.5824175824175825 x 100 = -58.24%