-58.69% is the change from 840 to 347
Calculation steps:
[( 347 - 840 ) ÷ 840] x 100 = -58.69%
Formula
Percentage change = [(347 - 840) / 840] x 100
Subtract the new number by the original number
347 - 840 = -493
-493 ÷ 840 = -0.5869047619047619
-0.5869047619047619 x 100 = -58.69%