-22.06% is the change from 340 to 265
Calculation steps:
[( 265 - 340 ) ÷ 340] x 100 = -22.06%
Formula
Percentage change = [(265 - 340) / 340] x 100
Subtract the new number by the original number
265 - 340 = -75
-75 ÷ 340 = -0.22058823529411764
-0.22058823529411764 x 100 = -22.06%