74.69% is the change from 320 to 559
Calculation steps:
[( 559 - 320 ) ÷ 320] x 100 = 74.69%
Formula
Percentage change = [(559 - 320) / 320] x 100
Subtract the new number by the original number
559 - 320 = 239
239 ÷ 320 = 0.746875
0.746875 x 100 = 74.69%