-34.41% is the change from 340 to 223
Calculation steps:
[( 223 - 340 ) ÷ 340] x 100 = -34.41%
Formula
Percentage change = [(223 - 340) / 340] x 100
Subtract the new number by the original number
223 - 340 = -117
-117 ÷ 340 = -0.34411764705882353
-0.34411764705882353 x 100 = -34.41%