49.49% is the change from 99 to 148
Calculation steps:
[( 148 - 99 ) ÷ 99] x 100 = 49.49%
Formula
Percentage change = [(148 - 99) / 99] x 100
Subtract the new number by the original number
148 - 99 = 49
49 ÷ 99 = 0.494949494949495
0.494949494949495 x 100 = 49.49%