-82.94% is the change from 340 to 58
Calculation steps:
[( 58 - 340 ) ÷ 340] x 100 = -82.94%
Formula
Percentage change = [(58 - 340) / 340] x 100
Subtract the new number by the original number
58 - 340 = -282
-282 ÷ 340 = -0.8294117647058824
-0.8294117647058824 x 100 = -82.94%