121.21% is the change from 99 to 219
Calculation steps:
[( 219 - 99 ) ÷ 99] x 100 = 121.21%
Formula
Percentage change = [(219 - 99) / 99] x 100
Subtract the new number by the original number
219 - 99 = 120
120 ÷ 99 = 1.2121212121212122
1.2121212121212122 x 100 = 121.21%