-58.07% is the change from 818 to 343
Calculation steps:
[( 343 - 818 ) ÷ 818] x 100 = -58.07%
Formula
Percentage change = [(343 - 818) / 818] x 100
Subtract the new number by the original number
343 - 818 = -475
-475 ÷ 818 = -0.5806845965770171
-0.5806845965770171 x 100 = -58.07%