51.52% is the change from 99 to 150
Calculation steps:
[( 150 - 99 ) ÷ 99] x 100 = 51.52%
Formula
Percentage change = [(150 - 99) / 99] x 100
Subtract the new number by the original number
150 - 99 = 51
51 ÷ 99 = 0.5151515151515151
0.5151515151515151 x 100 = 51.52%