200% is the change from 99 to 297
Calculation steps:
[( 297 - 99 ) ÷ 99] x 100 = 200%
Formula
Percentage change = [(297 - 99) / 99] x 100
Subtract the new number by the original number
297 - 99 = 198
198 ÷ 99 = 2
2 x 100 = 200%
Example