-3.79% is the change from 343 to 330
Calculation steps:
[( 330 - 343 ) ÷ 343] x 100 = -3.79%
Formula
Percentage change = [(330 - 343) / 343] x 100
Subtract the new number by the original number
330 - 343 = -13
-13 ÷ 343 = -0.037900874635568516
-0.037900874635568516 x 100 = -3.79%