-19.13% is the change from 345 to 279
Calculation steps:
[( 279 - 345 ) ÷ 345] x 100 = -19.13%
Formula
Percentage change = [(279 - 345) / 345] x 100
Subtract the new number by the original number
279 - 345 = -66
-66 ÷ 345 = -0.19130434782608696
-0.19130434782608696 x 100 = -19.13%