79.38% is the change from 320 to 574
Calculation steps:
[( 574 - 320 ) ÷ 320] x 100 = 79.38%
Formula
Percentage change = [(574 - 320) / 320] x 100
Subtract the new number by the original number
574 - 320 = 254
254 ÷ 320 = 0.79375
0.79375 x 100 = 79.38%