31.9% is the change from 511 to 674
Calculation steps:
[( 674 - 511 ) ÷ 511] x 100 = 31.9%
Formula
Percentage change = [(674 - 511) / 511] x 100
Subtract the new number by the original number
674 - 511 = 163
163 ÷ 511 = 0.31898238747553814
0.31898238747553814 x 100 = 31.9%