79.44% is the change from 321 to 576
Calculation steps:
[( 576 - 321 ) ÷ 321] x 100 = 79.44%
Formula
Percentage change = [(576 - 321) / 321] x 100
Subtract the new number by the original number
576 - 321 = 255
255 ÷ 321 = 0.794392523364486
0.794392523364486 x 100 = 79.44%