-34.99% is the change from 343 to 223
Calculation steps:
[( 223 - 343 ) ÷ 343] x 100 = -34.99%
Formula
Percentage change = [(223 - 343) / 343] x 100
Subtract the new number by the original number
223 - 343 = -120
-120 ÷ 343 = -0.3498542274052478
-0.3498542274052478 x 100 = -34.99%