-23.48% is the change from 345 to 264
Calculation steps:
[( 264 - 345 ) ÷ 345] x 100 = -23.48%
Formula
Percentage change = [(264 - 345) / 345] x 100
Subtract the new number by the original number
264 - 345 = -81
-81 ÷ 345 = -0.23478260869565218
-0.23478260869565218 x 100 = -23.48%