0.52% is the change from 388 to 390
Calculation steps:
[( 390 - 388 ) ÷ 388] x 100 = 0.52%
Formula
Percentage change = [(390 - 388) / 388] x 100
Subtract the new number by the original number
390 - 388 = 2
2 ÷ 388 = 0.005154639175257732
0.005154639175257732 x 100 = 0.52%