-84.55% is the change from 343 to 53
Calculation steps:
[( 53 - 343 ) ÷ 343] x 100 = -84.55%
Formula
Percentage change = [(53 - 343) / 343] x 100
Subtract the new number by the original number
53 - 343 = -290
-290 ÷ 343 = -0.8454810495626822
-0.8454810495626822 x 100 = -84.55%