30.43% is the change from 23 to 30
Calculation steps:
[( 30 - 23 ) ÷ 23] x 100 = 30.43%
Formula
Percentage change = [(30 - 23) / 23] x 100
Subtract the new number by the original number
30 - 23 = 7
7 ÷ 23 = 0.30434782608695654
0.30434782608695654 x 100 = 30.43%