6.56% is the change from 305 to 325
Calculation steps:
[( 325 - 305 ) ÷ 305] x 100 = 6.56%
Formula
Percentage change = [(325 - 305) / 305] x 100
Subtract the new number by the original number
325 - 305 = 20
20 ÷ 305 = 0.06557377049180328
0.06557377049180328 x 100 = 6.56%