41.28% is the change from 390 to 551
Calculation steps:
[( 551 - 390 ) ÷ 390] x 100 = 41.28%
Formula
Percentage change = [(551 - 390) / 390] x 100
Subtract the new number by the original number
551 - 390 = 161
161 ÷ 390 = 0.4128205128205128
0.4128205128205128 x 100 = 41.28%