-2.61% is the change from 345 to 336
Calculation steps:
[( 336 - 345 ) ÷ 345] x 100 = -2.61%
Formula
Percentage change = [(336 - 345) / 345] x 100
Subtract the new number by the original number
336 - 345 = -9
-9 ÷ 345 = -0.02608695652173913
-0.02608695652173913 x 100 = -2.61%