79.06% is the change from 320 to 573
Calculation steps:
[( 573 - 320 ) ÷ 320] x 100 = 79.06%
Formula
Percentage change = [(573 - 320) / 320] x 100
Subtract the new number by the original number
573 - 320 = 253
253 ÷ 320 = 0.790625
0.790625 x 100 = 79.06%