-84.39% is the change from 346 to 54
Calculation steps:
[( 54 - 346 ) ÷ 346] x 100 = -84.39%
Formula
Percentage change = [(54 - 346) / 346] x 100
Subtract the new number by the original number
54 - 346 = -292
-292 ÷ 346 = -0.8439306358381503
-0.8439306358381503 x 100 = -84.39%