90% is the change from 390 to 741
Calculation steps:
[( 741 - 390 ) ÷ 390] x 100 = 90%
Formula
Percentage change = [(741 - 390) / 390] x 100
Subtract the new number by the original number
741 - 390 = 351
351 ÷ 390 = 0.9
0.9 x 100 = 90%
Example