-18.66% is the change from 343 to 279
Calculation steps:
[( 279 - 343 ) ÷ 343] x 100 = -18.66%
Formula
Percentage change = [(279 - 343) / 343] x 100
Subtract the new number by the original number
279 - 343 = -64
-64 ÷ 343 = -0.18658892128279883
-0.18658892128279883 x 100 = -18.66%