26.42% is the change from 511 to 646
Calculation steps:
[( 646 - 511 ) ÷ 511] x 100 = 26.42%
Formula
Percentage change = [(646 - 511) / 511] x 100
Subtract the new number by the original number
646 - 511 = 135
135 ÷ 511 = 0.26418786692759294
0.26418786692759294 x 100 = 26.42%