-82.35% is the change from 340 to 60
Calculation steps:
[( 60 - 340 ) ÷ 340] x 100 = -82.35%
Formula
Percentage change = [(60 - 340) / 340] x 100
Subtract the new number by the original number
60 - 340 = -280
-280 ÷ 340 = -0.8235294117647058
-0.8235294117647058 x 100 = -82.35%