-58.81% is the change from 840 to 346
Calculation steps:
[( 346 - 840 ) ÷ 840] x 100 = -58.81%
Formula
Percentage change = [(346 - 840) / 840] x 100
Subtract the new number by the original number
346 - 840 = -494
-494 ÷ 840 = -0.5880952380952381
-0.5880952380952381 x 100 = -58.81%