18.26% is the change from 345 to 408
Calculation steps:
[( 408 - 345 ) ÷ 345] x 100 = 18.26%
Formula
Percentage change = [(408 - 345) / 345] x 100
Subtract the new number by the original number
408 - 345 = 63
63 ÷ 345 = 0.1826086956521739
0.1826086956521739 x 100 = 18.26%