-18.63% is the change from 424 to 345
Calculation steps:
[( 345 - 424 ) ÷ 424] x 100 = -18.63%
Formula
Percentage change = [(345 - 424) / 424] x 100
Subtract the new number by the original number
345 - 424 = -79
-79 ÷ 424 = -0.18632075471698112
-0.18632075471698112 x 100 = -18.63%