6.15% is the change from 325 to 345
Calculation steps:
[( 345 - 325 ) ÷ 325] x 100 = 6.15%
Formula
Percentage change = [(345 - 325) / 325] x 100
Subtract the new number by the original number
345 - 325 = 20
20 ÷ 325 = 0.06153846153846154
0.06153846153846154 x 100 = 6.15%