112.12% is the change from 99 to 210
Calculation steps:
[( 210 - 99 ) ÷ 99] x 100 = 112.12%
Formula
Percentage change = [(210 - 99) / 99] x 100
Subtract the new number by the original number
210 - 99 = 111
111 ÷ 99 = 1.121212121212121
1.121212121212121 x 100 = 112.12%