45.19% is the change from 270 to 392
Calculation steps:
[( 392 - 270 ) ÷ 270] x 100 = 45.19%
Formula
Percentage change = [(392 - 270) / 270] x 100
Subtract the new number by the original number
392 - 270 = 122
122 ÷ 270 = 0.45185185185185184
0.45185185185185184 x 100 = 45.19%