3.45% is the change from 29 to 30
Calculation steps:
[( 30 - 29 ) ÷ 29] x 100 = 3.45%
Formula
Percentage change = [(30 - 29) / 29] x 100
Subtract the new number by the original number
30 - 29 = 1
1 ÷ 29 = 0.034482758620689655
0.034482758620689655 x 100 = 3.45%