31.11% is the change from 389 to 510
Calculation steps:
[( 510 - 389 ) ÷ 389] x 100 = 31.11%
Formula
Percentage change = [(510 - 389) / 389] x 100
Subtract the new number by the original number
510 - 389 = 121
121 ÷ 389 = 0.3110539845758355
0.3110539845758355 x 100 = 31.11%