100% is the change from 289 to 578
Calculation steps:
[( 578 - 289 ) ÷ 289] x 100 = 100%
Formula
Percentage change = [(578 - 289) / 289] x 100
Subtract the new number by the original number
578 - 289 = 289
289 ÷ 289 = 1
1 x 100 = 100%
Example