100% is the change from 299 to 598
Calculation steps:
[( 598 - 299 ) ÷ 299] x 100 = 100%
Formula
Percentage change = [(598 - 299) / 299] x 100
Subtract the new number by the original number
598 - 299 = 299
299 ÷ 299 = 1
1 x 100 = 100%
Example