66.87% is the change from 326 to 544
Calculation steps:
[( 544 - 326 ) ÷ 326] x 100 = 66.87%
Formula
Percentage change = [(544 - 326) / 326] x 100
Subtract the new number by the original number
544 - 326 = 218
218 ÷ 326 = 0.6687116564417178
0.6687116564417178 x 100 = 66.87%