69.06% is the change from 320 to 541
Calculation steps:
[( 541 - 320 ) ÷ 320] x 100 = 69.06%
Formula
Percentage change = [(541 - 320) / 320] x 100
Subtract the new number by the original number
541 - 320 = 221
221 ÷ 320 = 0.690625
0.690625 x 100 = 69.06%