69.47% is the change from 321 to 544
Calculation steps:
[( 544 - 321 ) ÷ 321] x 100 = 69.47%
Formula
Percentage change = [(544 - 321) / 321] x 100
Subtract the new number by the original number
544 - 321 = 223
223 ÷ 321 = 0.6947040498442367
0.6947040498442367 x 100 = 69.47%