4.5% is the change from 511 to 534
Calculation steps:
[( 534 - 511 ) ÷ 511] x 100 = 4.5%
Formula
Percentage change = [(534 - 511) / 511] x 100
Subtract the new number by the original number
534 - 511 = 23
23 ÷ 511 = 0.04500978473581213
0.04500978473581213 x 100 = 4.5%