-0.87% is the change from 343 to 340
Calculation steps:
[( 340 - 343 ) ÷ 343] x 100 = -0.87%
Formula
Percentage change = [(340 - 343) / 343] x 100
Subtract the new number by the original number
340 - 343 = -3
-3 ÷ 343 = -0.008746355685131196
-0.008746355685131196 x 100 = -0.87%