6.4% is the change from 375 to 399
Calculation steps:
[( 399 - 375 ) ÷ 375] x 100 = 6.4%
Formula
Percentage change = [(399 - 375) / 375] x 100
Subtract the new number by the original number
399 - 375 = 24
24 ÷ 375 = 0.064
0.064 x 100 = 6.4%
Example