-9.74% is the change from 349 to 315
Calculation steps:
[( 315 - 349 ) ÷ 349] x 100 = -9.74%
Formula
Percentage change = [(315 - 349) / 349] x 100
Subtract the new number by the original number
315 - 349 = -34
-34 ÷ 349 = -0.09742120343839542
-0.09742120343839542 x 100 = -9.74%